Celtic's fans were amazing, says Barcelona coach Tito Vilanova, after Parkhead witnesses stunning upset However, in the 83rd minute 18 year-old Tony Watt, on for Mikael Lustig to make his debut in the group stages of the competition, raced away to score the second, leaving Lionel Messi's late strike a consolation. It is a really difficult stadium but we were like the home team and we locked them in the box. But you are never happy when you don't win. If we had scored first it might have been a different game. But they scored first which allowed them to defend and their goalkeeper was brilliant tonight. It is not the first time we have lost a game like this and it won't be the last. After the match, Vilanova was even asked if he would now consider signing taller players due his team's ongoing problems in defending set-pieces. "We could sign taller players but I like to have fun when I'm on the bench and this is the way that we play," Vilanova added. We have suffered from set-pieces after losing Eric Abidal and Seydou Keita but we can only try to attack more and not let them have any corners.