"If I don't get in the squad I don't know what I will do," said 31-year-old Bellamy, who revealed he has rejected an offer to join German club Wolfsburg.
"I might finish, full stop. Or look at every option. This game is ruthless."
"I feel strongly that I can offer something at the club," Bellamy added."
"[But] I sort of feel I am not going to be part of it. I can see it from a distance. I find that very difficult to take because I really enjoy playing for Manchester City. I think I have shown that with my commitment this year."