Jose Mourinho's Manchester United are all set to face a massive sell-out in the summer transfer window. According to the reports, as many as three big names are on the brink of leaving OId Trafford. Besides these three there are others as well. What has added further fuel to the speculation is that Mourinho was left fuming with Romelu Lukaku and Marouane Fellaini for not making enough efforts to play in the FA Cup final against Chelsea. That being said, United having a busy transfer market is well and truly expected and many players leaving the club is also evident.