I also think so. I think he will surprise us and do well. He will sit back in front of the defense while Vidal will take a more offensive role to fill the void created by Marchisio absence.
Well, I used to be very negative about this signing but:
-He is a free signing
-Comes as a squad player
-Can pass the ball better than Sissoko
-Lower wages than Sissoko
Not so bad imo, hopefully he will do well.