I disagree with the last 3.
Amavi (once fully fit) will bring loads to our game.
Ayew has a lot of skill and can unlock a defence but needs some managing to get his head back in the game.
Traore has bags of potential. The goal against the Baggies was ridiculous, he looked so strong & fast, basically steamrollered his way through. I feel for the guy a bit, hes only young and had only known Barcelona before he came here. Then he got injured which is rotten luck to be sitting around for months on end in a country he doesnt know. As per Ayew, if we can get his head right he could also become a huge asset (Barca didnt add a buy back clause for nothing).
Its just my opinion of course but if we can manage those 3 players properly they will definately give us an advantage.