I'd take both Remy and Ben Arfa - both with points to prove, both with match winning ability. The 2 of them still managed to look good in a poor Newcastle side last season (when picked).
Yes, Ben Arfa has fallen out with Pardew and yes he's probably been unprofessional but I imagine that's because he's desperate to get away from Pardew. He's always been respectful to the clubs fans.
Remy gets goals and can play out wide in a 4-3-3
Our defence is pretty solid
Our central midfield options are strong
Imagine attacking options of Lukaku, Mirallas, Barkley, Remy, Atsu and Ben Arfa (with Naismith, Pienaar, McGeady, Osman as back ups)