I would take a chance on him if he were still there at 4.
The Patriots always would take a young QB early, while still having Brady, develop him, show him off in some games, then before his contract is up, trade him for more then what they paid.
Monday is a very interesting talent, that though may be picked way earlier then the 4th round, if he fell, he's a huge bargain that may be hard to pass up as our backup.