Ambrose who was last week warned by Celtic manager, Brendan Rodgers to cut his mistakes, diverted Juan Camara's harmless cross from the left past his goalkeeper, Craig Gordon to restore Barcelona's lead.

This is the latest in the line of mistakes from Ambrose which have been frustrating to Celtic fans.

The International Champions tie saw Lionel Messi and Luis Suarez make their first Barcelona appearances of pre-season in Dublin.

Messi managed 45 minutes while Suarez - top scorer in LaLiga last term - lasted until the hour mark.

Arda Turan's excellent strike the comical own goal from Ambrose and a Munir El Haddadi's striker gave Barcelona their three goals.

Leigh Griffiths scored Celtic's only goal, taking advantage of some woeful defending.