Olegario Benquerenca (POR) had already been appointed for the second leg of the UEFA Champions League, on 12-13 April 2011.Referee: Olegário Manuel Bartolo Faustino Benquerença
Assistant Referee 1: Bertino Cunha Miranda
Assistant Referee 2: João Ferreira Santos
Additionat Assistant Referee 1: Artur Manuel Ribeiro Soares Dias
Additional Assistant Referee 2: Carlos Miguel Taborda Xistra
Fourth Official: Duarte Nuno Pereira Gomes
