City's football administration officer admits the club are not worried that Tevez's present agreement runs out in the summer of 2014 when he can leave for nothing.
Marwood said: "Everyone knows Carlos only has a year left on his contract but he has been fantastic for Manchester City, his scoring record, his tenacity, his energy.
"I think he is in a good place at the moment.
"Roberto Mancini has talked about extending Tevez's contract and these conversations will continue in the summer.
"We have had no offers and Carlos is happy at the club. Discussions will take place at the end of the season in terms of his future at City."