McClair, celebrating his 11th season with United, drew a larger testimonial crowd, against his old club, than Bryan Robson, Mark Hughes or Lou Macari.
Alex Ferguson, the United manager, started with seven of the first-team side that beat Blackburn on Saturday. Roy Keane put United in front just before the break.
Ferguson reverted to a reserve squad for the second half and Celtic became dominant. The substitute David Haigh equalised in the 77th minute and added the winner three minutes later.Reuse content