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

The Blues failed to bring in a single player during the January window, despite seeing their transfer ban cut short by FIFA, but have already been busy this summer.

Here, Sports Mole rounds up the latest news on possible comings and goings from Stamford Bridge.

Sunday morning's Chelsea transfer talk news roundup:

Chelsea hold talks with Rennes goalkeeper Edouard Mendy?

Chelsea are allegedly contemplating a bid for Rennes goalkeeper Edouard Mendy.

With Kepa Arrizabalaga having failed to impress at Stamford Bridge, the Blues are looking for a replacement for the Spaniard, either on a short or long-term basis.

While Burnley's Nick Pope and Atletico Madrid's Jan Oblak have been linked with a switch to West London, it appears that Frank Lampard is considering other options.

According to highly-regarded Twitter account @ExWHUemployee, discussions have recently been held with Rennes stopper Mendy.

In his first season at the French outfit, the Senegalese made 28 appearances in all competitions, helping his new club qualify for the Champions League through their Ligue 1 position.

Although the 28-year-old has a contract until 2023, the financial implications of the coronavirus pandemic may lead to Rennes cashing in on Mendy for the right price.

Bayer Leverkusen chief reiterates Kai Havertz asking price

Bayer Leverkusen sporting director Rudi Voller has denied suggestions that Chelsea are closing in on a deal for Germany international Kai Havertz.

The 21-year-old has been strongly linked with a move to Stamford Bridge over the last few months, and a recent report claimed that the Blues were nearing an agreement with all parties.

However, Leverkusen chief Voller has reiterated that the German giants will not be dropping their valuation - thought to be in the region of £90m - insisting that the coronavirus outbreak does not mean that there will be a summer discount.

"There is nothing new in this regard, and we are still very relaxed about it. Of course, we would be very happy if he stayed for another year. It is clear that the departure of such a player, despite the high transfer fee, always means a loss - see Leipzig and [Timo] Werner," Voller told Sportbuzzer.

"In times of corona, it may actually be that the transfer fees have decreased for many players. But corona or no corona, this is not the case with exceptional players like Havertz or Jadon Sancho. There is no corona discount for them. What makes Kai Havertz so interesting is the fact that he embodies world-class in four or five positions."

Havertz was in impressive form for Leverkusen during the 2019-20 campaign, scoring 18 times and contributing nine assists in 45 appearances in all competitions.

The German - also previously linked with Manchester United, Real Madrid and Bayern Munich - has entered the final two years of his contract at BayArena.

More transfer news from Chelsea:

Manchester City defender John Stones added to Barcelona shortlist?
Barcelona will reportedly contemplate an approach for Manchester City defender John Stones if they sell Gerard Pique this summer. Read more.

Chelsea talks for Thiago Silva 'now advanced'
Chelsea are reportedly in advanced talks with veteran centre-back Thiago Silva, who will depart Paris Saint-Germain after Sunday's Champions League final. Read more.