Barco, who was involved in a viral heated exchange with Jude Bellingham after the World Cup semi-final, has moved to Stamford Bridge on a seven-year deal

The 22-year-old is the 13th player to move between the clubs in a three-year period since BlueCo took control of Strasbourg.

The Argentine hit the headlines last month when he clashed with Jude Bellingham after England's semi-final defeat at the World Cup.