The buildup to 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 during the summer but missed out on a big-name striker in January, leading to speculation that they could splash the cash again when the window reopens.

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

Saturday morning's headlines:

Manchester United join race for Arsenal midfielder Matteo Guendouzi?
Manchester United are reportedly considering whether to join the race to sign Arsenal midfielder Matteo Guendouzi. Read more.

Napoli defender Kalidou Koulibaly to join Manchester City for £72m?
Manchester City are reportedly in pole position to sign Napoli defender Kalidou Koulibaly in a £72m deal during the next transfer window. Read more.

Arthur set for Juventus medical this weekend?
Barcelona midfielder Arthur will travel to Italy this weekend to undergo a medical with Juventus, according to a report. Read more.

Chelsea 'approach Bayern Munich to discuss David Alaba'
Chelsea make contact with Bayern Munich to discuss a potential move for David Alaba, according to a report. Read more.

Arsenal's Matteo Guendouzi 'in contact with four clubs'
Arsenal midfielder Matteo Guendouzi is in talks with Barcelona, Paris Saint-Germain, Inter Milan and Atletico Madrid ahead of a potential summer move, according to a report. Read more.