Barcelona striker David Villa has said that the prospect of facing Real Madrid is going to be extremely tough, according to the Free Football Bets website.

The Spanish champions qualified for the semi-finals of the Champions League on Tuesday evening after defeating Shakhtar Donetsk 6-1 on aggregate in the last eight.

Madrid themselves are on course to book a spot in the last four as they lead Tottenham Hotspur 4-0 in their quarter-final tie. And should they progress, they will meet Barca for a place in the final.