Manchester United players have been urged not to swap their playing shirts with opposition players.

The Sun reports that Red Devils stars are no longer allowed to offload their famed strip to opponents wanting a piece of the United action.

It is understood that losing the playing shirts of the likes of Zlatan Ibrahimovic, Paul Pogba and Wayne Rooney on a weekly basis is costing the club too much money.

A source told The Sun: "They are asked not to swap shirts so they don't have to be replaced.

"It seems daft given how much the club is worth.

"The owners have a reputation for keeping an eye on costs."

United shirt swappers could be costing the club a whopping £660 a week.