From my experience, the Saints aren't really a team that you can clear out and start fresh with. You've not got loads of money to spend (500k), and it's not that easy to sell your players. Not that you really need to, as with a good partner for Raziak up front (Eddie J perhaps?), getting promotion is rather easy with the team you have.
Probably the best person to sell is Nathan Dyer.
IMO he rather lives up to his surname, and you can get 6-700k for him. As coolbananas said, don't sell Bale, he's one of the best LBs in the game, and you're not gonna replace him with the money you'll be able to get.