Tevez impressed in his first season but has found opportunities limited during the current campaign since the summer arrival of Dimitar Berbatov.
"I do have a great feeling about Manchester United and, in particular, the fans. I have a great affection for them and they have made the feeling phenomenal," he told the Mail.
"But at this point I am not sure if I will stay, not least because it is not just my decision. It is up to Manchester to decide if they want to keep me - and I have to decide what is right for my career, for my future."
Tevez admits he is frustrated at the moment, highlighting his form last year he continued: "Last season I was the second top scorer at the club, but this season I have been benched and I find that hard to understand when I am not playing badly."
A true professional however, Tevez said he would not change his focus or his commitment to the Premier League, European and World club champions.
Dismissive when asked about Diego Maradona's comment that "Carlos Tevez should sit on the bench for no one", the 25-year-old said that bench or pitch he always gives everything.
"From my point of view you don't ever make a decision just because you are sitting on the bench," he said. "You have to analyse the whole situation. Right now my only intention is to give everything in every game [and] the four trophies we are trying to win.
"For the shirt of Manchester I will always give 100 per cent and for the supporters I will always give 100 per cent."
The former Corinthians striker also fought his corner over his role in the 'Carlos Tevez affair', relating to penalties suffered by West Ham for breaching rules banning third-party ownership when he played for the Hammers.
He said: "As far as I am concerned, why should it be the Carlos Tevez affair? It is West Ham's affair. This is not my problem and it was not my fault. I did nothing wrong."
He added: "If West Ham have not submitted the documents correctly, that is down to them."