Ander Herrera is set to join Paris Saint-Germain this summer despite a last-minute attempt from Manchester United to keep the midfielder at Old Trafford, sources have told ESPN FC.

The Spaniard is on the verge of signing a three-year £180k-a-week deal to join the French champions when his contract expires at the end of the season.

Herrera's preference was to extend his stay at United but, after growing frustrated at a lack of communication from the club, is ready to commit his future to the Ligue 1 side. The move is set to be announced at the end of the season.

Sources have told ESPN FC that Herrera was left in the dark for three months at the start of the year and that it was only after Ole Gunnar Solskjaer was confirmed as permanent manager that United made an improved offer to the 29-year-old -- bettering the terms on the table from PSG -- but by then it was too late.

Herrera, who missed the Champions League defeat to Barcelona with a muscle injury, is set to leave on a free transfer after five seasons following his £29 million move from Athletic Bilbao in 2014.

He has won the League Cup, FA Cup and Europa League and was named player of the year in 2017.

United could also lose Juan Mata for free in the summer. Sources have told ESPN FC that the Spaniard has been offered a one-year extension but with other Champions League clubs interested, the 30-year-old's future is still up in the air.

Captain Antonio Valencia is also set to leave on a free transfer after the club decided against triggering a one-year extension in the defender's contract.