Ryan Giggs saved United night as he scored the equalizer against Celtic before the full time to keep United in top of Group E in the UEFA CHAMPIONS LEAGUE.
United dominated for most of the game but some brilliant Celtic defending kept them at bay until six minutes from time.
Ben Foster has made his debut in the Champions League and Rafael Da Silva has given another start as Gary Neville and Wes Brown were out of the traveling squad.
Celtic opened the score on 13th minute when 13th minute McDonald chipped the ball over Ben Foster.
United could not convert the chances they got into Celtic goal. But second half changes gave United a boost when Rooney and Evra brought on.
Giggs save United in the 84th minute when Ronaldo had a powerful shot palmed away by Boruc but only to Giggs who headed into the back of the net.
United will forget this result and will focus in the coming Premier League away test against Arsenal.