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.

Wednesday morning's Barcelona transfer talk news roundup:

Manchester United 'line up Barcelona raid for four players'

Manchester United are reportedly hoping to take full advantage of Barcelona's expected summer overhaul and have identified four players they would be interested in signing from the Catalan giants.

Barcelona's 8-2 Champions League quarter-final defeat to Bayern Munich last week has sparked huge speculation regarding a number of roles at the club from president Josep Maria Bartomeu to captain and talisman Lionel Messi.

Manager Quique Setien has already been sacked after only 25 games in charge, and rumoured replacement Ronald Koeman is set to embark on a summer clearout with Barcelona also needing to trim their wage bill.

Spanish outlet Mundo Deportivo claims that United could be one of the main beneficiaries of the firesale and are interested in Ousmane Dembele, Arturo Vidal, Ivan Rakitic and Samuel Umtiti.

The report goes on to add that United have already enquired about Umtiti and Dembele, the latter of whom they are considering as a possible alternative to number one target Jadon Sancho.

The quartet are all thought to be available for transfer this summer and would fit Ole Gunnar Solskjaer's desire to bring in a new central defender, midfielder and winger.

Barcelona 'make contact with free agent Malang Sarr'

Free agent Malang Sarr has allegedly emerged as a transfer target for Barcelona ahead of next season.

After a trophyless season and the financial implications of the coronavirus pandemic, the Catalan giants are facing problems both on and off the pitch.

At a time when many of the first-team squad are available for transfer, club officials have been left to contemplate moving away from high-profile additions.

According to SPORT, Sarr has been identified as a potential signing after recently departing Nice on a free transfer.

The 21-year-old, who can play at centre-back or left-back, made 19 appearances in Ligue 1 during the most recent campaign.

The report claims that contact has already been made with the representatives of the player, who has previously been linked with Arsenal.

More transfer news from Barcelona:

Ronald Koeman 'wants Donny van de Beek as first Barcelona signing'
Prospective new Barcelona manager Ronald Koeman reportedly identifies Ajax midfielder Donny van de Beek as his preferred first signing if he takes over at the club. Read more.

Gonzalo Higuain warns Barcelona's Lionel Messi over Premier League move
Gonzalo Higuain warns Barcelona forward Lionel Messi about the physicality of the Premier League amid speculation regarding a potential switch to England. Read more.

Barcelona 'decide against sacking sporting director Eric Abidal'
Barcelona president Josep Maria Bartomeu reportedly decides against sacking sporting director Eric Abidal in the wake of the club's 8-2 Champions League defeat to Bayern. Read more.

Sergio Busquets 'among players not wanted by Ronald Koeman at Barcelona'
Barcelona stalwart Sergio Busquets is reportedly among a host of high-profile players who could see his future at the club come under threat if Ronald Koeman takes over. Read more.

Barcelona 'to enforce wage cuts on players who refuse to leave this summer'
Barcelona are reportedly looking to offload a number of key players in a major summer overhaul and will threaten those reluctant to leave with pay cuts. Read more.