article_snippet.sent: Sportsmail understands Manchester United manager Louis van Gaal is very keen to replicate match conditions during sessions.
article_snippet.sent: Manchester United manager Louis van Gaal looks on during a training session alongside Wayne Rooney .
article_snippet.sent: A club source said: 'Manchester United manager Louis van Gaal pays very close attention to detail.
article_snippet.sent: Manchester United manager Van Gaal speaks during a press conference at the training centre last week .
highlights_snippet.sent: The Dutchman is  keen to replicate match conditions during sessions .