5) Wayne Rooney
Finally, could club captain Wayne Rooney even be considering his future at Manchester United if things go on like this? The England international has flirted with leaving Old Trafford twice before, coming extremely close to moving to rivals Manchester City and Chelsea. With van Gaal baffling everyone by removing him from his preferred striker’s role and playing him in midfield, where he has struggled, it would not be a surprise if he were another frustrated member of the first-team who could look to move on after being misused by the controversial Dutch tactician.