You have to clean up the RB position. You probably are not going to be able to off-load Murray so he becomes the focus of your offense going into next season.
OL - Peters, Tobin and either Barbre or Gardener should be gone. Someone will overpay for Peters you cannot make another financial mistake and bring him back at the level he is at.
Bradford in my eyes has done enough to warrant an extension. As the GM I would franchise him. Give him a full year under a new HC and evaluate if he is able to duplicate his 2nd half of the season. His play from the second half of the Dallas game on was borderline elite.
WRs/TEs - They also need to move on from Celek and add another dimension on the outside. I am not on the dumping all the money on a FA WR train.
For the sake of debate on what they need:
1) I'm okay with Murray being here if you fix the o-line and have a different coach. Kelly didn't use Murray for what he was to do, and Murray can't live on a line that's awful. Murray gets his scaryness from hitting a hole that's always open. Sproles can thrive because he makes his own. Just fix the line a little and Murray will be a contributing RB. I don't believe for a second he just dropped off from leading rusher to an actual third-string RB.
2) I agree, except for Peters possibly. I'd keep Peters if he doesn't continue to be a jerk. He's clearly declined, but he's still better than most of the line - and I'm not sure we're in a position to kick out one of our only competent linemen.
3) Agreed. Bradford has done well and I think either a 1-year deal or franchise (whichever, I don't care) keeps him here.
4) Why Celek? What has he done other than produce when it's thrown to him?
I'd also say that I'm on board to get a WR that can catch the ball. I don't think speed plagued this offense at all; it was CATCHING the ball. How many times have you watched Bradford throw a very good pass only to be dropped by Matthews, Agholor, Miles, Ertz...every single one of them, basically.