I'd prefer Zaha to Barkley.
I think we need both types:
- a Zaha/mane type to replace GKN in the squad and provide a pacey option either up top or behind Kane
- an attacking midfielder (lets not have the 'is barkley a CM or not' debate again), whether Barkley or Gomes or someone else, to cover Dembele and possibly also the no 10 role