Andrei Kanchelskis has told his former club Manchester United that they are in for a "very, very difficult game" against Shakhtar Donetsk this evening.
The 44-year-old, who is still the only Ukrainian to have played for United, has pointed to the support that the team from his homeland receive as a major reason as to why they are tough to beat.
"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."
Shakhtar have lost just one of their last 33 outings in the Donbass Arena.