He's awesome defensively.
But when it comes to attacking I'm not sure if he has the explosiveness needed to run past his opponents and make plays near the line. He cuts into most of times, which is not very good, specially against Chelsea when the middle was crowded.
Anyway, with him and Isla the balance would be perfect. Isla is very aggressive, would be a very offensive right winger naturally when attacking, pushing the team to a 3-4-3 sometimes. Asamoah is as solid as possible, so the 2 of them would match well.