Manchester United boss Ole Gunnar Solskjaer has insisted that his side will have to be at their best to overcome a "very dangerous" Atalanta BC outfit on Tuesday night.

The Red Devils came from two goals behind to record a 3-2 victory over Atalanta when the two teams met in the reverse match in the Champions League last month.

Man United are now in Italy preparing for Tuesday's affair, and Solskjaer has said that his team will have to be prepared to "suffer" in order to pick up a positive result at the Gewiss Stadium.

"They're a very good team. Very dangerous. When they've got the ball they're aggressive, high intensity. It was a high running game, with the stats so you have to be prepared for that again, you have to suffer," Solskjaer told MUTV.

"They had quality to score when they got the opportunities and we had to be patient to break them down because they're hard to break down."

Man United, who will enter the match off the back of a 3-0 victory over Tottenham Hotspur in the Premier League on Saturday, are currently top of Group F, boasting six points from three matches.