Ralf Rangnick believes Scott McTominay and Fred are 'perfect' for the 4-2-2-2 formation Manchester United adopted in their 1-0 win over Crystal Palace.

McTominay and Fred were regulars under Ole Gunnar Solskjaer in a partnership that was often derided by a section of the fanbase before Michael Carrick finessed their roles during his three-game tenure as caretaker manager.

The duo started again in Rangnick's first match in interim charge as the German decided to name an unchanged team but switch to a narrow attacking system that benefited full-backs Diogo Dalot and Alex Telles.

Fred scored the winner in the 77th minute and Rangnick spoke measuredly about the Brazilian's and McTominay's contributions.

"If you play the way we played today with regard to intensity, with regard to being on the front foot, playing proactively and having four offensive players ahead of Scotty and Fred, with Jadon, Bruno, Cristiano, and Marcus, it's highly important you have players who are very disciplined, proactively aggressive against the ball," Rangnick explained.

"Scotty and Fred are almost perfect defensively on that. There were one or two or three mistakes, in the first-half, two square passes, one from Scott and one from Fred, I don't like those kind of balls in midfield from those positions.

"Overall, as I said, the other team in possession of the ball, Fred and Scott are almost perfect."