I could be wrong, but Bahk retiring will only save the Packers whatever is left of his per game roster bonus's (Max $500K) and anything he would have made (by playing) in 2024, which would be $21,593,481.
What I have always wondered about is if a team is able to recapture any of the signing bonus or guaranteed money, when a players contract is terminated early, by the player. I doubt it, but IMO, since retirement would mean he didn't fulfil his entire contract, 1/4 of that money should be in question.
If nothing else, just another cautionary tale when it comes to giving a player a 4 year deal with a $30,000,000 signing bonus & $61,500,000 guaranteed.