Five successful passes in the Premier League, zero shots at goal and just 29 minutes of action in all competitions - just a few of the shocking numbers behind £13.5million man Oumar Niasse.

Everton made the 26-year-old the third most expensive player in their history when they splashed out to sign him from Lokomotiv Moscow on February 1, but he has barely been seen since.

Niasse is yet to start a game and has only made five substitute appearances. For Saturday's FA Cup semi-final defeat by Manchester United, he was left out of the squad entirely.

Oumar Niasse (L) runs with the ball during Everton's 3-2 defeat against West Ham at Goodison Park in March

Niasse, pictured at Lokomotiv Moscow (right), has played for just 29 minutes since joining Everton in January

Steven Pienaar (right) and Niasse watch on from the bench during Everton's 1-1 draw with Southampton

OUMAR NIASSE AT EVERTON Transfer fee: £13.5million ALL COMPETITIONS Appearances: 5 Starts: 0 Minutes played: 29 Goals: 0 Assists: 0 PREMIER LEAGUE ONLY Touches: 19 Passes made: 10 Successful passes: 5 Shots: 0 Duels won: 3 Duels lost: 6 Advertisement

On Roberto Martinez's bench were two right backs - Tony Hibbert and Matthew Pennington - left back Bryan Oviedo, wingers Kevin Mirallas and Gerard Deulofeu, and 34-year-old Leon Osman. Arouna Kone, the club's only other senior striker, was also absent.

Hibbert has not played a single first-team game all season and only returned to action with the Under 21s last week, while Pennington was recalled from a loan spell with League One Walsall just to be involved at Wembley. Somehow, both were deemed more suitable for a place in Martinez's 18-man squad.

Niasse's slow start to life on Merseyside was understandable. He arrived from Russia having not played a competitive game for well over a month and also had a wrist injury - which required minor surgery - to contend with.

But having been thrown on for his debut for the last 10 minutes of Everton's 2-0 FA Cup win at Bournemouth on February 20, the Senegal international has gone on to play just another 19 minutes in all competitions.

His lack of playing time has left most supporters bemused, particularly with Romelu Lukaku struggling for form in front of goal in recent weeks. In fact, the Toffees have scored only three times in their last six matches.

Niasse was voted Russia's Player of the Year for 2015 and Martinez initially seemed excited about the qualities the Senegal international would add to his squad.

'I'm really pleased to be able to bring in Oumar in this window and we know he's going to have a massive impact going forward,' Martinez said after sealing a deal for the Lokomotiv star.

'He brings a real hunger and desire to be successful into what is already a strong squad.'

Fast forward almost three months and the Spaniard now says it will be a 'bonus' if Niasse plays a part in the final four fixtures of the season.

Roberto Martinez has been reluctant to play Niasse and did not include him for Saturday's FA Cup semi-final

Niasse arrived at Everton with a lack of match fitness but has still made only five substitute appearances

Niasse made his Everton debut against Bournemouth on February 20 but is yet to start a game for the club

NIASSE'S APPEARANCES SO FAR February 20 - Bournemouth (A), nine minutes March 1 - Aston Villa (A), two minutes March 5 - West Ham United (H) 14 minutes March 12 - Chelsea (H), one minute April 3 - Manchester United (A), three minutes TOTAL: 29 minutes Advertisement

Before Saturday's 1-1 draw with Southampton, in which Niasse was again an unused substitute, Martinez told the Liverpool Echo: 'Oumar will benefit completely with a pre-season and at the start of next season.

'This campaign is more about getting used to the environment and to get to slowly work towards the physicality of this league.

'If he could play some part of the games it would be a bonus but at the moment it is more of an introduction than the star role he can have.'

However, there is a growing fear that the former Brann striker has failed to convince Martinez that he is cut out for life in England's top-flight. Sportsmail understands at least one senior member of the Spaniard's backroom team remains unconvinced about Niasse.

His cameos so far this season have done little to dispel suggestions that he may be worth far less than the £13.5m fee he commanded. He looked lost during his 14 minutes on the pitch against West Ham in March as Everton threw away a 2-0 lead to lose 3-2, although Martinez's decision to bring him on, with his side down to 10 men, was baffling in itself.

Niasse sprints away from Spartak Moscow's Vladimir Granat during hiss successful spell in Russian football

The 26-year-old was all smiles on the night he was unveiled to the Goodison Park crowd against Newcastle

Niasse has been training with Everton since the start of February but his fitness still seems to be an issue

Another two minutes away at Aston Villa, one more at home to Chelsea and 180 seconds against United at Old Trafford are all we have seen of Everton's most recent signing, but it is the manager's reluctance to play him which has left fans most concerned.

Surely, after nearly three months of full training, he should be fit enough for more than just the closing moments of a game? The fact Niasse played for his country and scored against Niger in March has only led to more questions, too.

Romelu Lukaku looked isolated in the first half of Saturday's semi-final and when Everton improved after the break, the addition of another striker may have made the difference for Martinez's men.