Charlie Weis has 4 Superbowl rings. Three with the Patriots and one with the Giants. This guy knows how to coach. I believe Cassel has been getting poor instruction from Haley. Haley had too much to do to worry about coaching receivers and Qb's. Weis is here, he knows what to do, hopefully they will hire out an OL, WR, and QB coach.
I will predict next season that Matt Cassel will have a 70% completion rate, 25 TD/10INT, about 3500 yards, and will get sacked about 18 times.
Its going to be a big improvement.