Chelsea have agreed to sign former Brighton left wing-back Valentin Barco from Strasbourg.
The Argentina international, 21, has excelled in Ligue 1 after joining from Brighton for £7.9m in January 2025, and is expected to sign a six-year contract.
Barco, who has been playing as a midfielder, would become the second player to join Chelsea this summer, with striker Emanuel Emegha having already agreed a move.
It would be the 13th deal between the two BlueCo clubs since the start of last season, while Belgian goalkeeper Mike Penders is also under consideration to return to Stamford Bridge following a successful loan spell.
Strasbourg are due to make a considerable profit on the deal.
Chelsea have agreed to sign former Brighton left wing-back Valentin Barco from Strasbourg
Barco had declared his intention to leave earlier this week, saying: ‘Today I say goodbye to this club. I always gave everything on the pitch in every game for this shirt.
‘I want to thank my team-mates, who made everything easier for me; Liam Rosenior and his staff for the confidence they showed in me and for helping shape me as a player; Gary O’Neil and his staff for understanding me and helping me improve; everyone at the club who supports us every day; and the fans for the love they always gave me. Thank you, Strasbourg.’
