Silva and Toure to bring out best in City newcomer Aguero

Aguero, the club’s record signing at £38m, made a stunning City debut on Monday night by coming off the bench to score twice and set up another goal.

The Argentina forward’s devastating performance, which began when he was introduced in the 60th minute, propelled City to a 4-0 win over Swansea in their Premier League opener.

With Silva and Toure also impressing in the Etihad Stadium rout – and the prospect Aguero could also combine with Carlos Tevez and Mario Balotelli if the pair can be brought onside – City would appear genuine title contenders.

Mancini said: “I think Sergio needs to play more with his team-mates to get better.

“We have incredible players like David Silva and Yaya, who speak the same language.

“I think he needs to improve with the team.”

Swansea initially acquitted themselves well as they made their top-flight entrance following last season’s dramatic play-off promotion.

Yet by the end of the first half the hosts were dominant having hit the bar twice and forced a number of saves from new Swans goalkeeper Michel Vorm.

Edin Dzeko finally broke the deadlock after 57 minutes and Aguero quickly turned a hard-fought victory into a rout.

It was a clear warning to other sides with title ambitions, most notably champions and neighbours Manchester United.

Mancini added: “It was really important to start very well because United won – but it is always important to start the season well.”

Aguero is determined to build on his flying start to life as a City player.

Having played in the Copa America last month and started pre-season training late, the 23-year-old playmaker was held back throughout last week’s Community Shield and for a further 60 minutes on Monday night.

The former Atletico Madrid forward quickly set about making up for lost time and said: “I am happy. The start was really good and I want to keep like this. It was nice.

“I had a chance to play a little bit and I enjoyed it.

“I helped the team and I want to keep doing the same in the future.”

Norwich have confirmed the signing of defender Daniel Ayala from Liverpool on a four-year deal for an undisclosed fee.

The 20-year-old Spaniard becomes Paul Lambert’s eighth summer addition as he looks to bolster a squad which secured successive promotions from League One to the Premier League.

Ayala joined Liverpool from Sevilla in 2007, but found his first-team opportunities limited at Anfield, and last season spent loan spells in the Championship at both Hull and Derby.

Lambert feels Ayala will add some much-needed depth for the challenges ahead.

The Spain Under-21 international could find himself making a swift debut in Sunday’s Premier League game against Stoke at Carrow Road, should centre-back Zak Whitbread not recover from the knee problem he picked up during the 1-1 draw at Wigan.