[4] Busacca was selected to referee the UEFA Champions League Final in Rome on 27 May 2009 between FC Barcelona and Manchester United.

On 19 September 2009, Busacca was the referee in a Swiss Cup match between FC Baden and BSC Young Boys.

[5] Busacca had initially denied making the obscene gesture but was handed a three-match ban by the Swiss Football Association and was forced to issue an apology.

He awarded a penalty and showed the red card to the South African goalkeeper, Itumeleng Khune, in the 77th minute, for tripping the Uruguay striker, Luis Suárez.

and FC Barcelona controversially sending Robin Van Persie off for kicking the ball after the whistle, with some commentators suggesting that he had cemented his place in the hall of fame of worst refereeing decisions of all time "Every decision referee Massimo Busacca got wrong - and right - in Barcelona vs Arsenal".