According to what I read, if Tony wants to stay then he'll stay. Its ultimatley up to him.
It truly makes me sad to even imagine him in another uniform. But, if it comes down us still rebuilding and struggling next year and he wants to go to a legit Superbowl contender team, then he should try to get the ring to cap off his career.
We owe him that much. Hes done so much for us.