VIDEO: Inter Milan's Palacio scores after comical error from Celtic 'keeper Gordon

A rematch of the 1966-67 European Cup final got off to a ridiculous start on Thursday as Inter Milan entered the interval with a 3-2 lead at Celtic.

To add to the madness, of the five goals scored, Celtic's second was an own goal - Inter's Hugo Campagnaro put the ball into his own net following pressure from Stuart Armstrong - and Inter's third was the result of a comical error from Celtic 'keeper Craig Gordon.

Only seconds before the end of the first half, Gordon failed to properly collect a long ball from Gary Medel, providing Rodrigo Palacio with an easy tap-in for his second goal of the match.

Gordon surely wishes he could have that moment back.