Chelsea are very interested in signing Barcelona defender Sergino Dest during the summer transfer window, Sport claims.
This could force them into the transfer market for a replacement and Sport claims that Dest has been identified as the ideal target.
The USA international can play in both full-back positions, and the Blues are looking to sign him in a swap agreement this summer.
Both Azpilicueta and Alonso are on the radar of Barcelona and talks are planned this week to negotiate an exchange deal.
Meanwhile, the Blues are also looking at the prospect of landing goalkeeper Neto as Kepa Arrizabalaga has been tipped to leave.
The Spaniard has become frustrated with his deputy role this term, and he has been fancied to join Lazio during the summer.
Maurizio Sarri signed him when he was the Blues manager in 2018, and a reunion appears a genuine possibility in the coming weeks.