no he can't do that
he technically can but the team would have to not put him on the reserve/retired list despite his stated retirement - unlikely a team would do that if their aim in the first place was to stop him playing for us
there's a way that could happen but it would be a bizarre situation for it to happen - unless teams dont believe he'll follow through with refusing to play and are signing him for non-vindictive reasons and just wanted him to play