Ultimately Eze can play anywhere behind the striker, in the OG formation he is played on the left, i don't think it's his natural position.Eze plays left, Esse plays right. He won't replace him
Esse is only 19 so he will need time to adjust. I suspect cameos from the bench will be his main contribution this season unless we can injuries.
Ultimately he has been bought to replace Olise on the right, however, all teams need an adaptable squad - Liverpool have 5 to play in the front 3 positions and often interchange.
Kamada and Eddie N should be our 5 but both have been massively disappointing.