Whoever decides to sign OBJ will understand, completely, that he's not going to play this season.
He's just not going to be physically ready. Even if he was completely cleared to play, they would have to start out slowly with OBJ, only put him on the field for a half dozen plays in his first game. In the second game they would double his load.
Problem is, we are talking playoffs because he's not going to be in any regular season games. By the time OBJ can play a full load of plays, the postseason will be over. Then that team will be cutting players to make room for the new big hit on their cap next season. OBJ is going for the money.