Porto have told 'Chelsea they must pay £40million' for left-back Alex Telles as Frank Lampard looks to shore up his side's leaky backline.
The 27-year-old Brazilian has been a key target for the Blues, who have made several attempts to sign him from the Portuguese club.
But they will need to trigger his £40million release clause that Porto officials are sticking to, according to A Bola.
Who is Alex Telles?
Telles started at his local Brazilian team Juventude when he was a teenager.