Packers must re-instate Brett Favre in order for him to be able to go play football for another team. Who do you think Favre would possibly play for? The Falcons could really use the QB that they traded away along time ago. The Bears everyone knows needs help in that area.
Just in must mean YESTERDAY SF (just joking) he is not going to play for anyone else. IF and that is a BIG if he was to come back (I do not think he will I think they all hope he will , except maybe Aaron Rodgers) he would play for the Pack.
IF Favre went anywhere else, he could and would still fill seats. Being the bad guy sells tickets just as well as being the good guy. Haven't you ever watched WWE?