Arsene Wenger accused referee Martin Hansson of gifting Porto the winning goal in the Portuguese side's 2-1 Champions League victory over Arsenal.

European soccer's governing body, Uefa, excluded Porto from next season's Champions League on Wednesday.

The strength of Chelsea's recent revival faces its first real test when the English champions take on their Portuguese counterparts, FC Porto, on Wednesday. Jose Mourinho returns to the club he guided to 2003 Uefa Cup and 2004 Champions League triumphs with a Chelsea squad that has put together a run of six successive wins.