"I know of no prior instance of a team violating the prohibition on tampering with both a head coach and star player" over several years, NFL Commissioner Roger Goodell said.
Fox Sports announced the deal and Brady confirmed the plans. But before he begins calling some of the biggest games, Brady said he has "unfinished business" on the field with Tampa Bay.
A quick exchange with Manchester United star Cristiano Ronaldo was enough to fuel speculation that Tom Brady might not really be retiring from the NFL.
The Tampa Bay quarterback won his record seventh Super Bowl in his first season with the Buccaneers. Brady set a number of records including being the oldest ever to play in the championship.
It's Tom Brady's tenth Super Bowl, but his first without the New England Patriots, which he left last year for the Tampa Bay Buccaneers. Pats fans are divided on whether to root for him on Sunday.