Scott McTominay is adamant Donny van de Beek will be an 'important figure' for Manchester United.
The Dutchman has yet to start in the Premier League season, with critics creating noise about why he was signed by the club this summer.
But McTominay insists there 'no time to panic' over van de Beek.
"You see the way that Donny comes to training every day [with] a big smile on his face, wanting to work hard and wanting to impress everyone," McTominay told reports before Wednesday's clash with RB Leipzig.
"As the manger said, I'm so confident he'll be an important figure in this team and throughout the whole season.
"The way he's come in has lifted everyone else, with Edinson [Cavani] and Alex [Telles]. Big singings like that, who are top-quality players, can really lift a dressing room and I feel like we've already seen with the way that Alex played in Paris and with Donny coming off the bench and showing what he has whenever he has come on the pitch.
"There's no time to panic for Donny. I feel like people are so quick to come to an assumption [because] he's not playing. Give him time to adapt to a new league. Give him time to settle into his new house, or wherever he's living. Let him concentrate on the team."