The initial 90 minues of the match ended goalless and is unlikely to live long in the memory of the 90,000 fans inside the new Wembley stadium.
The Ivorian played a one-two with Frank Lampard before stabbing past United goalkeeper Edwin van der Sar, just as the match looked to be heading for penalties.
Manchester United winger Ryan Giggs missed a good chance to win the game in normal time, in the match that failed to live up to expectations.