Manchester United midfielder Ander Herrera has warned his teammates to expect a fearless Young Boys outfit when the two teams clash in the Champions League on Wednesday.

The Swiss club qualified via the playoffs after defeating Dinamo Zagreb 3-2 on aggregate.

"They are a team that has nothing to lose, they are playing against three big teams," Herrera told MUTV.

They are probably a very young team like Basel last season with all the desire and expectations to do good, so that will make them difficult because they have nothing to lose.

"If I'm not wrong, I think their pitch is artificial so we will have to adapt in the first game which is away to them."