By Mark Gleeson FLORIANOPOLIS, Brazil, Feb 19 (Reuters) - Robin van Persie's struggles at Manchester United this season might benefit the Netherlands at this year's World Cup in Brazil, their coach Louis van Gaal said on Wednesday. "The football he is experiencing now at Manchester United may be difficult for him but that could lead to him wishing to show his capability, his technique and his tactical skills at the World Cup," Van Gaal told reporters at a pre-World Cup workshop. More...