This is the picture of him there in disguise as a Rasta man. He is just standing, however, which doesn't mean he should be fit enough to play in GW3. I think he may still need some time off from heavy sprinting in football games, so Enzo Maresca will play it safe with him.
I feel he'll be used as a sub or probably won't be needed in the game as Enzo will want to stick with what has worked for him in the last game. The man needs a rest for real.
Manchester United are currently not at their best, but against big teams they can put up a performance, so GW5 will be important for Maresca as they face Manchester United in Old Trafford, and I think that will be the surest game for Palmer to play in again from kickoff. Against Fulham and Brentford, Chelsea should be able to easily pass them.