Southampton manager Ronald Koeman admits Morgan Schneiderlin may have played his last game for the club. The midfielder has been ruled out for the rest of the season with a knee ligament injury, but Tottenham are weighing up a bid for the 25-year-old, who has two years left on his £30,000-a-week contract, . Interest from Arsenal was rejected by Southampton last summer, but Koeman says the upcoming transfer window will be more testing for a player with ambitions to play in the Champions League. Morgan Schneiderlin may have played his last game for Southampton after damaging knee ligaments . The  French midfielder has been linked with a move to Arsenal and Tottenham this summer . Southampton manager Ronald Koeman has admitted that Schneiderlin may leave the club this summer . The Southampton boss said: ‘It’s more difficult (than last year), I understand because I got the possibility as a player to change team and go to a big team, Barcelona, from Holland. ‘We try to keep him for longer, we do everything, but there is a “stop” where we can’t do more and then it’s all about the decision of the player. ‘I don’t know (if he’s played his last game), or about interest or about bids. We would like to keep everybody but sometimes it’s difficult. There aren’t any serious bids for the player. He is happy but it’s up to him.’ While Koeman says that Schneiderlin's season is over, the player himself has not given up on making it back before the end of May. He tweeted: 'Sad about my injury .. I am not giving up on coming back before the end of the season !Thanks to everyone for their support !' Koeman also conceded that he may be forced to consider selling Nathaniel Clyne if the England right back does not sign a new contract within the next 10 days. Manchester United have shown interest in Clyne, who is entering the last year of his deal, and despite the offer to make him one of Saints’ best-paid players, he is stalling on signing. ‘The club is offering the maximum we can,’ Koeman said. ‘In football if you go into your last season of a contract, we don’t like that.’ Koeman also conceded that he may have to consider selling Nathaniel Clyne if he does not sign a new contract .
Morgan Schneiderlin ruled out for rest of the season with ligament damage . Southampton midfielder suffered injury in draw with Tottenham . Manager Ronald Koeman admitted he may have played last game for club . Schneiderlin has been linked with moves to Arsenal and Tottenham . Saints travel to relegation-threatened Sunderland at the weekend .