The summer transfer window has now begun, with rumours and speculation continuing to swirl as Manchester City eye possible reinforcements.

The 2018-19 champions did not bring in a single player during the January transfer window, despite suffering a defensive shortage for much of the 2019-20 campaign, but they have already started their business for the summer.

Here, Sports Mole rounds up the latest news on possible comings and goings at the Etihad.

Wednesday morning's Manchester City transfer talk news roundup:

Report: Manchester City fail with £92m bid for Atletico Madrid's Jose Gimenez

Manchester City have had a huge £92m bid for defender Jose Gimenez knocked back by Atletico Madrid, according to a report.

Last season's Premier League runners-up remain on the lookout for a new centre-back, despite bringing in Nathan Ake from Bournemouth last month.

Napoli's Kalidou Koulibaly is a possible target for the Citizens, but Spanish outlet Marca claims that Gimenez is their primary target.

City are said to have tabled a mammoth offer for the Uruguay international, which would have made him comfortably their record signing.

However, it is claimed that Atletico are not prepared to let Gimenez leave unless his £110m release clause is triggered.

Gimenez has spent six seasons in Atleti's first team and has three years to run on his existing contract.

Manchester United, Manchester City 'given deadline for Kalidou Koulibaly deal'

Napoli will reportedly take Kalidou Koulibaly off the transfer list if a deal for the centre-back is not done by this weekend.

The 29-year-old has been consistently linked with a move to the Premier League for a number of years now, with Manchester United and Manchester City thought to be most interested as they search for defensive reinforcements.

Paris Saint-Germain are also understood to be monitoring his situation, but no club has yet been willing to meet Napoli's €75m (£69.1m) asking price.

La Gazzetta dello Sport claims that Man City are currently leading the race but are not prepared to pay more than €70m (£64.5m), with talks further complicated by the frosty relationship between the two clubs following the collapse of a deal for Jorginho in 2018.

Napoli president Aurelio De Laurentiis has confirmed that Koulibaly will be allowed to leave this summer if the club receive a suitable offer, but both the club and the player would also still be happy if he stayed.

The Serie A outfit have set a deadline of this weekend to get any deal sorted due their league campaign getting underway against Parma on Sunday.

More transfer news from Manchester City:

Manchester City join Kylian Mbappe race?
Manchester City are reportedly prepared to join the race to sign Kylian Mbappe, who may wish to leave Paris Saint-Germain next summer. Read more.

Report: Kylian Mbappe prefers Real Madrid to Liverpool, Manchester City
Kylian Mbappe reportedly tells Paris Saint-Germain that Real Madrid are the only club he wants to join next summer, despite Premier League interest. Read more.

Barcelona confirm interest in Manchester City's Eric Garcia
Barcelona sporting director Ramon Planes confirms that the club are looking to strike a deal for Manchester City defender Eric Garcia. Read more.

Paris Saint-Germain 'trying to convince Kylian Mbappe, Neymar to stay'
Paris Saint-Germain pair Kylian Mbappe and Neymar are reportedly being talked into staying at the club amid links with a move away. Read more.