Manchester City have completed the signing of defender Nathan Ake from Bournemouth for £41m on a five-year deal.

The 25-year-old underwent his medical in Manchester on Wednesday, after City agreed a deal with relegated Bournemouth for the Netherlands international last week.

“Coming here is a dream for me. This is a top side full of world-class players. Everywhere you look in this squad there are big names with international pedigree.

“Pep (Guardiola) is a manager admired across the world – what he’s done in the game speaks for itself.

“The success he’s had is unbelievable and the style of football he plays really appeals to me. I know I’m going to have to work hard to get into the side, but that’s what I’m here to do.”

Much was made of how City failed to replace Vincent Kompany after his departure from the club, but it was the serious injury to Laporte which exposed the cracks.

Without Laporte, City’s weaknesses were laid bare. Even with Laporte, a natural partner is missing.

Nicolas Otamendi, John Stones and Eric Garcia have been tested, but Guardiola has still preferred to play veteran midfielder Fernandinho as one of the pair. Fellow midfielder Rodri has played there, too.

The lessons are clear. City are scintillating in attack and have emerging stars in those areas to fill veteran voids, but needed to splash cash on at least one centre-back this summer.

City want four more signings

Kalidou Koulibaly has long been linked with City

Despite a busy start to the post-coronavirus transfer window, Manchester City want four more arrivals following the signings of Torres and Ake.

Defenders are now the priority, but deals for both a left-back and a second centre half, most likely Napoli’s Kalidou Koulibaly, are still some way off.

Further up the pitch, City face the daunting task of finding long-term replacements for two Premier League legends in David Silva and Sergio Aguero.

Inter Milan’s Lautaro Martinez remains the number one choice to fill the number 9 shirt, while The Athletic have reported City had enquired about the availability of Atletico Madrid’s Joao Felix, who has endured a difficult start following his £113m move last year from Benfica.

Summer transfer window – key dates and times

The summer transfer window will run for 10 weeks from July 27 and close at 11pm on October 5.

A domestic-only window for trades between the Premier League and EFL then runs from October 5 and closes on Friday October 16 at 5pm. Follow all the news and analysis on Sky Sports News and across Sky Sports’ digital platforms, including with our dedicated Transfer Centre blog.