Arise, Sergio!

Roberto Mancini unleashed Sergio Aguero on the Barclays Premier League last night – and then demanded more after a sensational two–goal debut from the £38million man.

Manchester City's record signing came off the bench to score twice and set up another in the final 30 minutes as Mancini's men began their league campaign with a 4–0 thrashing of promoted Swansea.

Aguero was an unused substitute for last week's Community Shield and was again kept waiting until Edin Dzeko had finally broken Swansea resistance just before the hour at the Etihad Stadium.

The Argentinian forward immediately made up for lost time by sliding in a Micah Richards cross and skilfully setting up David Silva before crowning a remarkable bow with a stunning 30–yard drive.

It was a victory City thoroughly deserved after hitting the bar twice through Silva and Gareth Barry in the first half and forcing numerous saves from Michel Vorm.

Manager Mancini said: "I know Aguero very well but I don't think he is 100-per-cent.

"He has worked for only one week with the team. He needs to improve but he is a fantastic striker and I am happy because he scored two important goals."

Mancini was pleased to get a campaign in which his side are expected to challenge for the title off to a winning start.

Mancini left controversial striker Mario Balotelli on the bench and wantaway Carlos Tevez was not even in the squad.