West Ham may have drawn a tricky FA Cup third-round opponent in the form of Manchester City on Monday evening, but it has emerged that the club had earlier been drawn to face their arch-rivals Millwall in the rehearsal.

Premier League and Championship sides entered the FA Cup third-round draw, which was made by Steven Gerrard and Ian Wright at the BT Tower on Monday evening, after a host of clubs - including Millwall - booked their place in the draw by winning their second-round ties over the weekend.

Millwall came from behind to beat Braintree Town 5-2 on Sunday, and ensure they entered the FA Cup draw a day later. The League One club, who currently sit in ninth place in the standings, went on to draw Premier League side Bournemouth in the third round - but it could have been very different.

BT Sport presenter Jake Humphrey, who oversaw the draw, revealed that Millwall were in fact drawn to play their fierce rivals West Ham in the third-round rehearsal just hours before the actual one was conducted.

Millwall and West Ham share a long and fierce rivalry - with the two teams' League Cup meeting at Upton Park in 2009 ending 3-1 to the Hammers after extra-time in a game that saw fans invade the Boleyn Ground pitch as riot police were needed outside the ground to guide fans to the tube station.

West Ham will face Manchester City at the London Stadium in the third-round of the FA Cup, which is due to be played across the weekend of 6 to 9 January 2017, while Millwall will host Bournemouth.