Manchester United manager Louis van Gaal is said to have irked some of his players by scheduling surprise training sessions, according to reports from The Sun.

Van Gaal has a reputation of using erratic managerial methods throughout his career and it is believed that the Dutchman has been scheduling surprise evening training sessions at United.

Such a tactic has understandably not gone down with the players and according to reports from the Sun, the United stars as well as their families are not happy with van Gaal.

The Sun reports: "The players are getting it in the neck from their WAGS, but they can't do a lot about it.

"Like most dads, they try and help out at home and look after the kids, but now they don't know whether they are suddenly going to be called into work. It means they can't go out for dinner and puts them on edge. Some like it, some don't."