Barcelona have made an official complaint to UEFA regarding the state of AC Milan's pitch at the San Siro.

Barca boss Pep Guardiola raised concerns over the surface following the Spanish giants' goalless draw with Milan in the first leg of the Champions League quarter-finals.

Barcelona announced on the club's website: "FC Barcelona has lodged a complaint with UEFA over the state of the Giuseppe Meazza (San Siro) stadium during the Champions League match."

A number of Barcelona players aired their frustrations with the pitch during play in Italy last night.