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

The Spanish champions spent big on Antoine Griezmann last summer but missed out on a big-name striker in January and have been hit hard by the coronavirus pandemic, meaning that selling players rather than buying could be their priority this summer.

Here, Sports Mole rounds up the latest transfer news from the Camp Nou.

Monday morning's Barcelona transfer talk news roundup:

Chelsea 'exploring possibility of signing Lionel Messi'

Chelsea are reportedly weighing up a potential move for Barcelona attacker Lionel Messi.

The Argentine is believed to be considering his future at Camp Nou, with various reports suggesting that the forward could seek pastures new during this summer's transfer window.

Manchester City and Inter Milan have both been strongly linked with the 33-year-old, who is said to have already informed new Barca boss Ronald Koeman that he could be on the move.

However, according to Sport, Chelsea are also exploring the possibility of signing the South American.

The report claims that the Blues have other areas that they want to address first, having already improved their attack by signing Hakim Ziyech and Timo Werner during this summer's transfer window.

Frank Lampard's side would allegedly be interested if Messi became available, though, and are keeping a close eye on developments as the speculation continues to gather pace.

Barca are said to be unprepared to sell their star player this summer for less than his £631m release clause.

Barcelona 'weighing up Jose Gaya approach'

Barcelona are reportedly preparing a summer move for Valencia defender Jose Gaya.

The Catalan giants are thought to be in the market for a new left-back ahead of the 2020-21 campaign amid suggestions that Jordi Alba's future at the club is uncertain.

According to Sport, Ronald Koeman's side are lining up an approach for Gaya, who has a €50m (£45m) release clause in his current deal at Mestalla.

The 25-year-old was again an important player for Valencia last term, making 32 appearances in all competitions, while he has featured 227 times in total for the club since debuting in 2012.

Real Madrid were linked with Gaya earlier this year but are unlikely to move for the Spaniard unless Marcelo departs the Bernabeu in the near future.

Barca are allegedly not actively looking to sell Alba this summer but would be prepared to listen to offers for the full-back as Koeman looks to freshen the side ahead of next season.

More transfer news from Barcelona:

Barcelona 'ready to demand £631m for Lionel Messi'
Barcelona are allegedly prepared to demand that Lionel Messi's £631m release clause is paid in full if they are to sell the forward this summer. Read more.

Ronald Koeman 'makes decision over Philippe Coutinho's Barcelona future'
Barcelona boss Ronald Koeman wants to keep Philippe Coutinho at the club this summer, according to a report. Read more.

Juventus 'eye Arturo Vidal return this summer'
Juventus want to re-sign Barcelona midfielder Arturo Vidal this summer, according to a report. Read more.

Ronald Koeman 'keen to bring Calvin Stengs to Barcelona'
AZ attacker Calvin Stengs is a summer transfer target for Barcelona boss Ronald Koeman, according to a report. Read more.

Barcelona 'told to pay £143m for Richarlison'
Barcelona will have to pay £143m if they wish to sign Everton forward Richarlison this summer, according to a report. Read more.

Barcelona 'eye Paulo Dybala as Lionel Messi replacement'
Barcelona identify Juventus attacker Paulo Dybala as a potential replacement for Lionel Messi, according to a report. Read more.

Barcelona 'prioritise sales of Ivan Rakitic, Luis Suarez'
Barcelona will prioritise the sales of Ivan Rakitic and Luis Suarez this summer, according to a report. Read more.

Thomas Tuchel: 'Lionel Messi is very welcome at Paris Saint-Germain'
Paris Saint-Germain boss Thomas Tuchel says that Barcelona's Lionel Messi "is very welcome" at Paris Saint-Germain. Read more.