The future of Manchester United striker Carlos Tevez has been put in further doubt after his agent refused to confirm whether he would be at the club next season.

Tevez, 24, this week vehemently denied claims he had rejected a contract offer from the Premier League champions, insisting he has had no discussions about making permanent the loan deal which expires in the summer.

Speculation the Argentina international will leave at the end of the season has been rife, with Real Madrid understood to be closely monitoring the situation.

Kia Joorabchian tonight defended his client's comments, saying the forward has not created any problems at the club or with manager Alex Ferguson, but  was vague when asked if Tevez would be at Old Trafford past the end of this campaign.

"It's very hard to predict," Joorabchian told BBC Radio Five Live Sport. "It's football. Things change by the minute, by the hour. It's not a no. You never know.

"All Carlos said in the interview was that it was not true, he has not rejected an offer from Manchester United, he has not made crazy demands. He just wanted the fans and the people to know that we haven't had any contract talks.

"That's the bottom line. He wanted to say 'How could I reject something if I've never spoken about it'?

"Carlos has never made an issue or a problem. He doesn't have a problem at all with Sir Alex. He's never had a fight with Sir Alex or any arguments.

"All of these things are being created around a simple story that Carlos wanted to put straight."

Joorabchian denied any contact had been made with other clubs, stressing that Tevez is focusing on his duties with United.

"I think we've made it very clear until now that we've always said he's a Man United player and if anybody wants to buy Carlos or talk about Carlos they must talk to Man United," he continued.

"We're not in the process of people trying to contact us etc etc. We've never entertained any conversations or chats with (other clubs) about him.

"The fact is that he's got six months left on his contract and he's happy to see that through and as he said he wants to win the title again, the Champions League again. He wants to win an FA Cup and now even the Carling Cup so he's very up for trying to get as many trophies as he can."

Joorabchian added: "He's saying 'I'm happy to continue doing what I do best. If I get a new contract and everything works out, fantastic. If it doesn't, I'll go to another club'."