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Stoke midfielder Charlie Adam believes Marko Arnautovic has to improve his all-round game if he is to be a success at West Ham United.
The Austrian winger is poised to join the Hammers in a potential £24million deal and would become their record signing in the process.
But Adam, who has been a teammate of Arnautovic for the past four years, believes the 28-year-old must work harder defensively if he is to avoid the wrath of the West Ham faithful.