Van Persie and Van Gaal were all hugs and high-fives at the World Cup a year ago... So what went wrong?

Van Persie and Van Gaal were all hugs and high-fives at the World Cup a year ago... so, where did it all go wrong at Old Trafford? 

Louis van Gaal's arrival at Manchester United seemed to be a dream come true for Robin van Persie. Their hugs and high-fives for Holland at the World Cup spoke of their close relationship. But one year on and the striker is on his way to Fenerbahce after falling out of favour with his compatriot. So what went wrong?