Heung-min Son has admitted confidence among the Tottenham squad is low heading in to Sunday’s North London Derby.

Spurs are winless in their last six and suffered a chastening 1-0 defeat at home to Bayer Leverkusen on Wednesday, a result that leaves Tottenham’s hopes of reaching the Champions League knockout stages in the balance.

Son, one of the stars of his side’s last win when Manchester City were put to the sword at White Hart Lane, has endured his own drop off in form. After scoring five in his first five games of the season the South Korean international is without a goal in his last six.

“Maybe confidence is low in front of goal, maybe, it is,” he told reporters. “I think we have had great chances in every game and it's also a bit unlucky.

“We have to accept that it is three goals in six games and we have to try to score. When we play, we don't want to lose.”

Despite their recent struggles Tottenham can draw level with Arsenal on 23 points if they can depart the Emirates with a victory.

Ten classic North London Derbies 10 show all Ten classic North London Derbies 1/10 3 May 1971, Tottenham 0 Arsenal 1 On the final day of the season Bertie Mee’s side needed at least a draw to claim the title against a Tottenham side that had claimed that season’s League Cup. A tight, nervy affair was not settled until the 88th minute.



Pat Jennings, who would move down the Seven Sisters Road in 1977, blocked John Radford’s initial shot but Ray Kennedy was on hand to head in the goal that secured Arsenal’s title. Keystone/Hulton Archive/Getty Images 2/10 1 January 1985, Arsenal 1 Tottenham 2 Tottenham's best shot at a title charge since they won the First Division in 1961 saw a famous victory at Highbury that saw them maintain their advantage at the top of the table with Glenn Hoddle in exceptional form.



Tony Woodcock earned a surprise lead for the hosts but Spurs kept coming, goals from Garth Crooks and Mark Falco securing the win.



Spurs would ultimately miss out to Everton in their title bid but this forever remains a famous victory for a great Tottenham side. Steve Powell/Allsport 3/10 14 April 1991, Tottenham 3 Arsenal 1 There had never been a North London Derby at such a late stage of the FA Cup before. Arsenal were targeting a double, mid-table Spurs were in their way.



The match will always be remembered for Paul Gascoigne’s howitzer of a free-kick after just five minutes, one of the great Wembley goals. Gary Lineker got the other two goals for Spurs, with Alan Smith claiming Arsenal’s consolation in a disappointing day for George Graham’s side. They would go on to win the league, but their rivals had snatched the cup from them. 4/10 25 April 2004, Tottenham 2 Arsenal 2 Arsenal meted out the ultimate humiliation on Tottenham fans, who were forced to watch on as Arsene Wenger's Invincibles secured the point they needed to win the title at White Hart Lane.



Visiting Arsenal fans were in dreamland after 35 minutes as Patrick Vieira and Robert Pires scored the goals; their mood was hardly worsened in spite Jamie Redknapp's strike and even a last-minute penalty from Robbie Keane that denied the champions a victory. ODD ANDERSEN/AFP/Getty Images 5/10 13 November 2004, Tottenham 4 Arsenal 5 The highest-scoring north London derby of the Premier League era saw Arsenal come out on top again at the Lane, seven months on from their title celebrations.



Noureddine Naybet had volleyed Tottenham into an early lead only for Thierry Henry to level on the stroke of half-time. From there the Gunners cut loose.



Lauren and Patrick Vieira made it 3-1, Freddie Ljungberg cancelled out Jermain Defoe's strike for 4-2, Ledley King added intrigue with the game's seventh, before Robert Pires hit a fifth for Arsenal. Freddie Kanoute's goal prompted a nail-biting finale for both sides. Ian Walton/Getty Images 6/10 22 January 2008, Tottenham 5 Arsenal 1 David Pleat, Glenn Hoddle, Jacques Santini, Martin Jol, Clive Allen and Alex Inglethorpe had come and gone but since 1999 no-one had been able to get the better of Arsene Wenger. That all changed in emphatic style in this League Cup semi-final, as Juande Ramos took a huge step towards a trophy.



Jermaine Jenas, Robbie Keane, Aaron Lennon, and Steed Malbranque ran in the goals for the home side, with Nicklas Bendtner adding to Arsenal’s humiliation with an own-goal. The match ended with Bendtner rowing with William Gallas and Arsenal humiliated. 7/10 29 October 2008, Arsenal 4 Tottenham 4 14 goals in two derbies made for a thrilling return for fans at 2008’s derbies and Tottenham left feeling much the better after both games. In one of Harry Redknapp’s first games in charge his side came from 4-2 down after 88 minutes to cap an unforgettable draw.



Arsenal had already dragged themselves back into the contest, overcoming David Bentley’s spectacular early strike to lead 3-1. When Robin van Persie scored just seconds after Darren Bent to make the score 4-2 it seemed Wenger’s side were on course for a comfortable win.



But then Jermaine Jenas curled in to revive Spurs’ hopes and Aaron Lennon tapped in from a deflected Luka Modric shot that had hit the post. It was little surprise that this would go on to be nominated as one of the Premier League’s greatest ever games. 8/10 14 April 2010, Tottenham 2 Arsenal 1 Spurs fans had been waiting since 1999 to beat Arsenal at White Hart Lane in the league. Danny Rose set them on their way with a spectacular rocket of an opening strike but it was Gareth Bale, scorer of the second, who shone brightest in the derby.



That this victory also ended Arsenal's hopes of winning the title only made it sweeter for Spurs. IAN KINGTON/AFP/Getty Images 9/10 20 April 2011, Tottenham 3 Arsenal 3 Only one side felt like winners at the end of this engrossing draw. Once more Arsenal's title ambitions took a hammer blow from Spurs in the final months of the season as the Gunners threw away a 3-1 advantage earned by Theo Walcott (whose strike was swiftly followed by a Rafael van der Vaart equalizer), Samir Nasri and Robin van Persie.



Tom Huddlestone thumped a strike past Wojciech Szczesny on the stroke of half-time before the goalkeeper brought down Aaron Lennon in the 70th minute. Van Der Vaart scored from the spot. IAN KINGTON/AFP/Getty Images 10/10 26 February 2012, Arsenal 5 Tottenham 2 With the Gunners 2-0 down at home to their greatest rivals the pressure on Arsene Wenger seemed unbearable. Had Spurs held on they would have been 13 points clear of Arsenal in third but their hosts somehow clawed their way from despair to ecstasy.



Bacary Sagna’s powerful header restored hope, Robin van Persie brought them level with a perfect curler. In the second half an early goal Tomas Rosicky and two from Theo Walcott turned the Emirates into dreamland. That Arsenal would somehow claim third from such a poor position made this victory all the sweeter. 1/10 3 May 1971, Tottenham 0 Arsenal 1 On the final day of the season Bertie Mee’s side needed at least a draw to claim the title against a Tottenham side that had claimed that season’s League Cup. A tight, nervy affair was not settled until the 88th minute.



Pat Jennings, who would move down the Seven Sisters Road in 1977, blocked John Radford’s initial shot but Ray Kennedy was on hand to head in the goal that secured Arsenal’s title. Keystone/Hulton Archive/Getty Images 2/10 1 January 1985, Arsenal 1 Tottenham 2 Tottenham's best shot at a title charge since they won the First Division in 1961 saw a famous victory at Highbury that saw them maintain their advantage at the top of the table with Glenn Hoddle in exceptional form.



Tony Woodcock earned a surprise lead for the hosts but Spurs kept coming, goals from Garth Crooks and Mark Falco securing the win.



Spurs would ultimately miss out to Everton in their title bid but this forever remains a famous victory for a great Tottenham side. Steve Powell/Allsport 3/10 14 April 1991, Tottenham 3 Arsenal 1 There had never been a North London Derby at such a late stage of the FA Cup before. Arsenal were targeting a double, mid-table Spurs were in their way.



The match will always be remembered for Paul Gascoigne’s howitzer of a free-kick after just five minutes, one of the great Wembley goals. Gary Lineker got the other two goals for Spurs, with Alan Smith claiming Arsenal’s consolation in a disappointing day for George Graham’s side. They would go on to win the league, but their rivals had snatched the cup from them. 4/10 25 April 2004, Tottenham 2 Arsenal 2 Arsenal meted out the ultimate humiliation on Tottenham fans, who were forced to watch on as Arsene Wenger's Invincibles secured the point they needed to win the title at White Hart Lane.



Visiting Arsenal fans were in dreamland after 35 minutes as Patrick Vieira and Robert Pires scored the goals; their mood was hardly worsened in spite Jamie Redknapp's strike and even a last-minute penalty from Robbie Keane that denied the champions a victory. ODD ANDERSEN/AFP/Getty Images 5/10 13 November 2004, Tottenham 4 Arsenal 5 The highest-scoring north London derby of the Premier League era saw Arsenal come out on top again at the Lane, seven months on from their title celebrations.



Noureddine Naybet had volleyed Tottenham into an early lead only for Thierry Henry to level on the stroke of half-time. From there the Gunners cut loose.



Lauren and Patrick Vieira made it 3-1, Freddie Ljungberg cancelled out Jermain Defoe's strike for 4-2, Ledley King added intrigue with the game's seventh, before Robert Pires hit a fifth for Arsenal. Freddie Kanoute's goal prompted a nail-biting finale for both sides. Ian Walton/Getty Images 6/10 22 January 2008, Tottenham 5 Arsenal 1 David Pleat, Glenn Hoddle, Jacques Santini, Martin Jol, Clive Allen and Alex Inglethorpe had come and gone but since 1999 no-one had been able to get the better of Arsene Wenger. That all changed in emphatic style in this League Cup semi-final, as Juande Ramos took a huge step towards a trophy.



Jermaine Jenas, Robbie Keane, Aaron Lennon, and Steed Malbranque ran in the goals for the home side, with Nicklas Bendtner adding to Arsenal’s humiliation with an own-goal. The match ended with Bendtner rowing with William Gallas and Arsenal humiliated. 7/10 29 October 2008, Arsenal 4 Tottenham 4 14 goals in two derbies made for a thrilling return for fans at 2008’s derbies and Tottenham left feeling much the better after both games. In one of Harry Redknapp’s first games in charge his side came from 4-2 down after 88 minutes to cap an unforgettable draw.



Arsenal had already dragged themselves back into the contest, overcoming David Bentley’s spectacular early strike to lead 3-1. When Robin van Persie scored just seconds after Darren Bent to make the score 4-2 it seemed Wenger’s side were on course for a comfortable win.



But then Jermaine Jenas curled in to revive Spurs’ hopes and Aaron Lennon tapped in from a deflected Luka Modric shot that had hit the post. It was little surprise that this would go on to be nominated as one of the Premier League’s greatest ever games. 8/10 14 April 2010, Tottenham 2 Arsenal 1 Spurs fans had been waiting since 1999 to beat Arsenal at White Hart Lane in the league. Danny Rose set them on their way with a spectacular rocket of an opening strike but it was Gareth Bale, scorer of the second, who shone brightest in the derby.



That this victory also ended Arsenal's hopes of winning the title only made it sweeter for Spurs. IAN KINGTON/AFP/Getty Images 9/10 20 April 2011, Tottenham 3 Arsenal 3 Only one side felt like winners at the end of this engrossing draw. Once more Arsenal's title ambitions took a hammer blow from Spurs in the final months of the season as the Gunners threw away a 3-1 advantage earned by Theo Walcott (whose strike was swiftly followed by a Rafael van der Vaart equalizer), Samir Nasri and Robin van Persie.



Tom Huddlestone thumped a strike past Wojciech Szczesny on the stroke of half-time before the goalkeeper brought down Aaron Lennon in the 70th minute. Van Der Vaart scored from the spot. IAN KINGTON/AFP/Getty Images 10/10 26 February 2012, Arsenal 5 Tottenham 2 With the Gunners 2-0 down at home to their greatest rivals the pressure on Arsene Wenger seemed unbearable. Had Spurs held on they would have been 13 points clear of Arsenal in third but their hosts somehow clawed their way from despair to ecstasy.



Bacary Sagna’s powerful header restored hope, Robin van Persie brought them level with a perfect curler. In the second half an early goal Tomas Rosicky and two from Theo Walcott turned the Emirates into dreamland. That Arsenal would somehow claim third from such a poor position made this victory all the sweeter.

With the likes of Erik Lamela, Harry Kane and Toby Alderweireld ruled out with injuries Son is almost certain to start as Spurs bid to get back to winning ways.

“It is a big game,” Son said. “We are sad, all of us, but we just have to look forward. On Sunday, it's a very good game and we'll try to win and change the face.”