SF is most likely, Tom grew up a SF fan and wanted to be drafted by them.
Cowboys were the enemy of SF so who should he choose, his fav team or their arch rival?
Also I could be wrong but I think MM was a coach at SF when tom was drafted, and MM didnt want brady.
Also factor in brady might now want to play for a puppet HC and the way things are done in jerry world.
And jerry likes his guys, and dak is one of his top guys. So many many things working against this ever happening.
The time to do it was when brady was leaving pats, but jones boys were not interested then, and probably are not now.