Can Jameis be our back up??

It's not likely that Winston is going to be a starter anywhere so he is going to have to accept the role of back up if he wants to keep playing. Why not take back up money from the Bucs, learn from the greatest QB in NFL history that is also 43 and wont be around long so he can be that guy when Brady retires?? The kid just turned 26 and can afford to do that. What is everyone's thoughts?? That way we have a QB for the future also.