article_snippet: And yet last year's Champions League man-of-the-match, a man who also played at the World Cup in Brazil, may well struggle to make Louis van Gaal starting line-up.
article_snippet: Based on ability, out-of-form Angel di Maria should be a shoo-in. out-of-form Angel di Maria explosive pace and unnerving eye for a killer pass would seem to be the perfect fit for a 90 minutes in which United may well spend long periods on the back foot, looking to counter.
article_snippet: Louis van Gaal pointed out that most players do not find most players feet until most players second season - but try telling that to Chelsea fans who have seen Diego Costa fit seemlessly into Jose Mourinho's Premier League leaders.
article_snippet: Juan Mata started for Manchester United in out-of-form Angel di Maria absence against Tottenham and impressed throughout .
article_snippet: Louis van Gaal now has to decide whether to stick or twist - Mata (centre) or out-of-form Angel di Maria (right) on Sunday?
article_snippet: Replacement Juan Mata linked well with Ander Herrera as Van Gaal's side displayed a synchronicity rarely seen this season.
article_snippet: Replacement Juan Mata, for all Replacement Juan Mata qualities, lacks pace.
article_snippet: out-of-form Angel di Maria is a better player but can out-of-form Angel di Maria finally deliver when United need out-of-form Angel di Maria most?
highlights_snippet: Louis van Gaal has to decide whether to start out-of-form Angel di Maria .
  
highlights_snippet: Based on ability, out-of-form Angel di Maria should be in the starting XI, but Louis van Gaal may decide to start Juan Mata instead of the Argentinian .
  