Manchester United boss Ole Gunnar Solskjaer has declared Ander Herrera as "vital" after their FA Cup win at Chelsea.

Herrera and Paul Pogba scored for the visitors in the first half for United's 2-0 win.

"His energy and tenaciousness is vital for us," Solskjaer said of the Spaniard.

"And that's why he plays, more or less, every single game.

"He has loads of energy, he can cover the right hand side, he runs forward. Tonight you can't just praise one, it's 11 players, plus the subs, but Ander has done fantastic."