Marko Arnautovic
Arriving from Stoke City for a club-record fee in the summer, Austrian international Marko Arnautovic is yet to prove his worth for the Hammers due to an early suspension that has already seen him miss a large chunk of the opening matches.
Arnautovic needs to step-up on his return from international duty and show why the Hammers spent the money they did to secure his services, otherwise he runs the risk of becoming the latest name in a long-list of failed transfers.