Former Reds winger Andrei Kanchelskis has warned Wednesday's Champions League Group A game against Shakhtar Donetsk won't be easy.
Kanchelskis played 161 times for United between 1991 and 1995, during a period in which the Reds won a first league title for 26 years as well as the domestic Double in 1994.
A flying winger, he was key to United's success in that era and remains the only Ukrainian to play for the club.
Kanchelskis, who now works as assistant manager at Russian Premier League side FC Volga Nizhny Novgorod, still keeps an eye on the football in both Ukraine and England, and says David Moyes' side will have their work cut out this evening.
"It is going to be very hard for Manchester United, I am afraid,” he told the Manchester Evening News.
“It will be a very, very difficult game because Shakhtar have a lot of good players and with the crowd behind them they are very tough to play against at home."
Indeed, Shakhtar haven't lost in front of their own fans since Juventus won in Donetsk last December and have suffered just one home
"It is going to be very hard for Manchester United. Shakhtar have a lot of good players and with the crowd behind them they are very tough to play against at home."
– Andrei Kanchelskis