Swiss official Massimo Busacca will referee Wednesday's Champions League final between Manchester United and Barcelona. His assistants will be countrymen Matthias Arnet and Francesco Buragina while Claudio Circhetta, also from Switzerland, will be the fourth official.

Busacca has already taken charge of a United game this season, their quarter-final second-leg victory over Porto. The final will be his 33rd Champions League match. Tom Henning Ovrebo, the Norwegian referee who was widely criticised for his handling of the semi-final second leg between Barcelona and Chelsea, has officiated at 22 Champions League matches. Uefa was accused at the time of giving an important game to an inexperienced referee and Busacca's levels of experience will be under scrutiny ahead of the match.

Busacca also refereed the 2007 Uefa Cup final between Espanyol and Sevilla, the Euro 2008 semi-final between Germany and Turkey and the 2006 World Cup second-round match between Argentina and Mexico.