Uefa is awaiting the official report from Manchester City's Europa League victory at Porto before deciding whether to act on the club's complaint that Mario Balotelli was racially abused by a section of the home support.

A Uefa spokesman said: "We are aware of Manchester City's claims and we are still waiting for the official report from the match delegate. That usually arrives one or two days after the match. The procedure then is if something like this is included in the report, then our disciplinary unit will have a look at it and decided if a case needs to be opened."