TURIN, ITALY - NOVEMBER 07: Marouane Fellaini of Manchester United celebrates his sides second goal which came through a Alex Sandro of Juventus (not pictured) own goal during the UEFA Champions League Group H match between Juventus and Manchester United at Juventus Stadium on November 7, 2018 in Turin, Italy. (Photo by Shaun Botterill/Getty Images)

Juventus boss Massimiliano Allegri believes Marouane Fellaini’s impact proved vital in Manchester United’s 2-1 Champions League win over them

The Belgian midfielder replaced Alexis Sanchez in the 79th-minute of the game on Wednesday with United trailing 1-0 after Cristiano Ronaldo’s stunning opener.

But Juan Mata’s free-kick seven minutes later put the scoreline level at 1-1 before an Alex Sandro own goal sealed United the win.

However, Allegri credited Fellaini instead as the turning point of the Group H match.

“In the first game, they didn’t have Fellaini and we used his absence to our advantage,” said Allegri, according to Goal.

“Tonight, he played and his physical presence was immediately felt. He controlled some high balls, although sometimes we were good at playing the ball on the ground.

“Conceding those free-kicks was our greatest mistake. That happened and we paid the price.

“We’ll have to learn from that.”

Juventus will next face AC Milan at the San Siro on Sunday in a Serie A fixture.