Former Manchester United striker Terry Gibson says Granada will push his old team all the way tomorrow night.

United and Granada are to meet in the first-leg of their Europa League quarterfinal tie.

LaLiga pundit Gibson told manutd.com: "They can also play 4-3-3 or three-at-the-back but whatever system they play, it looks like players understand it because of the organisation and coaching skills of Diego Martinez [the manager]. I don't think there are many managers who can change tactics on a regular basis and the team still look organised, but his team do.

"I think United will win 2-1. The second leg will still be up for grabs but it'll be tough for United. United would have to play well below par in both games [to go out] and it would be a massive surprise."