Speaking to The News of the World, Tevez said: "He [Mansour] signed me, he wants to keep me but, at the same time, he has told me to do whatever I need to do to be happy.
"He has told me, 'If you want to leave, then you can go'. There is no deadline - it's down to me.
"They offered me a new contract in December but I didn't want to extend it.
"At the end of the season they offered me another new deal but at the moment I don't know whether I will accept it.
"There are options but if I don't play for Real Madrid, Barcelona, Inter or Milan it won't be a massive void in my life.
"There are no other issues - Manchester is my second home."