West Ham have a fresh concern over forward Carlos Tevez after he reported a minor knee injury in Argentina's 2-1 friendly defeat to Spain in Murcia.
The 22-year-old lined up alongside Hammers team-mate Javier Mascherano for the South Americans, who lost to goals from Xavi and David Villa.
"Early on my knee hurt and I did not play 100%," Tevez told Argentinian TV station TyC Sports.