There are basically three main ways to replace Brady as quarterback, and the first is through a trade with another team, and there are a few names that have been brought up in this category, like Andy Dalton, Jimmy Garopolo, Cam Newton and Joe Flacco.
Another way to get a new quarterback is through free agency, which just began this last Wednesday and there are a few talented veteran quarterbacks still currently on the market, like Jameis Winston and Philip Rivers.
And finally, New England could use the upcoming NFL Draft to find their next quarterback, a draft that is said to be quarterback heavy, though the Pats have the 23rd pick right now and would most likely have to trade up to have a shot at a potential starter.