I think Brady retired because he knew the Bucs are not going to be a contender next year. If he could go to the 49ers (the team he grew up rooting for) and contend again, I could see him coming back. I think he looks at football now like the NBA where a franchise player tries manufacture an All Star team. He brought pieces to Tampa, but San Fran is already stacked. He would still probably try to bring Gronk and Antonio Brown with him.
But I never got the love for Lance. He has a lot of raw talent, but people said he was several years away from being a starter. When you are several years away from being a starter, you have no business being drafted in the first round never mind the third pick.