JOSE Mourinho admitted he has unfinished business at Chelsea when it come to the Champions League.

The latest campaign kicks off at Stamford Bridge on Wednesday night, and the Portuguese boss says winning it with the Blues would be akin to discovering the mythical golden city of El Dorado.

During the 16th and 17th centuries, Europeans, particularly the Spanish and Portuguese, went in search of the maritime world’s greatest prize but El Dorado was never found.

“It’s a competition that has a special aura,” he said this week. “Everybody wants to reach the El Dorado of football. It is a club competition for excellence so it has some magic.”

Mourinho has won European football’s top prize on two occasions – with Porto in the match which ‘won’ him his first stint at Stamford Bridge and then with Inter after he left west London.

Chelsea claimed the trophy in his absence in 2012, under the temporary stewardship of former on-field legend Roberto Di Matteo.

Blues’ Champions League opener is at home to Basel, of Switzerland, whom they beat on the way to last season’s Europa League triumph.