And FYI to self-criticize, I was going to make a point that Michigan giving Brady a statue would be like Purdue giving John Wooden a statue... And then I realized that a few years ago, a donor sponsored a John Wooden statue at Purdue.
I'm opposed to this for the same reason. Almost all of John Wooden's notoriety comes from the coaching success he had at UCLA. He was a revered player for Purdue, a 3-time All-American, and a member of the only men's basketball team Purdue can claim as a national champion. So his own accomplishments at Purdue are probably on a higher level than Brady's accomplishments at Michigan.
But still, without Wooden's coaching success, is anyone sponsoring a statue of him at Purdue? Or are they capitalizing on his notoriety and trying to highlight "hey he was a Boilermaker first!" I don't think anyone puts up a Wooden statue at Purdue without Wooden's coaching success, just as I don't think anyone puts up a Brady statue at Michigan without his professional success at New England.
In both cases, they'd be honored for success that largely occurred at a completely different institution. In Wooden's case, at a competing institution, and in Brady's case, at a higher level of competition that is fundamentally not directly related to Michigan.