Former Manchester United No2 Rene Meulensteen says only two players could cover Bruno Fernandes in the current squad.
Meulensteen admits Paul Pogba or Donny van de Beek could deputise if he is ever absent.
He told Stadium Astro: "I think United can only have one New Year's Wish and that's for Fernandes not to get injured or suspended.
"His energy is unbelievable. Look at this goal again – it's absolutely fantastic. The timing of the run and ball from Edinson Cavani is fantastic.
"As soon as Fernandes gets on the ball the likes of Marcus Rashford are on their way. Fernandes is just so, so important for United.
"He gives them rhythm, he's a winner, he's a leader, he creates assists and he scores goals."
He added: "They have other players that can go in that position like Pogba or Donny van de Beek but they don't have the same impact as him.
"I'm so impressed by his energy levels. He's not afraid to work hard.
"He's always trying to hurt the opposition with a pass in behind, he's not afraid to shoot from distance.
"It's a player that United rely on heavily. I'm sure that if he wasn't there it would have an effect on United's form."
