Netherlands striker Robin van Persie has dismissed speculation he could be an injury concern ahead of the World Cup opener against Spain next week. The Manchester United striker, 30, said he was withdrawn at half-time in the 2-0 win against Wales as a "precaution". Van Persie, sidelined for six weeks late last season with a knee injury, appeared to suffer a groin problem. But he said: "I wouldn't call it an injury. It built up during the game so I decided it was sensible to come off." Captain Van Persie, a scorer in his country's previous two friendlies, seemed to grimace as he walked down the tunnel during the break.