IMO his lack of production is due to piss poor offensive design, play calling, and O line play. Most passes he received were dump offs 3 yards in the back field with a defender already on him. Get him the ball with some room and he can still produce, IMO. To be fair....Brees was just masterful at getting the ball to the playmakers with room to run. None of our QB's since then can do that at all.
In other words. 2 year extension and let him do what he is good at.