I don’t see it happening.
I seem to recall a few years back he said he might be interested in an acting career, or was that someone else?......................
In other sports, Magic Johnson, Wayne Gretsky and Ted Williams all tried their hands at it. Nobody remembers any of their coaching records and for good reason.
Besides, NFL coaching is even more work-intensive than being a QB. Even in the off-season, coaches are putting in 12 hour plus days. It literally becomes your life.
Brady has enough money to do whatever the hell he wants for the rest of his life. Why would he want to stay up until 2 in the morning watching game films?