North London rivals Arsenal and Tottenham Hotspur have reportedly joined Chelsea in the race to sign Stuttgart left wing-back Borna Sosa.
The 24-year-old has been a standout performer for the Bundesliga outfit this season, scoring two goals and providing five assists in 20 appearances across all competitions.
Chelsea are believed to be one club who have been alerted to the Croatian's form, but German journalist Christian Falk claims both Arsenal and Spurs are also interested in a potential summer transfer.
The Gunners already have two left-backs on their books in the form of Kieran Tierney and Nuno Tavares, while Spurs currently have Sergio Reguilon and Ben Davies among their ranks – the latter, however, has been operating as a left-sided centre-back since the arrival of Antonio Conte.
After beginning his career with boyhood club Dinamo Zagreb, Sosa moved the Stuttgart in the summer of 2018.
The five-time Croatia international has since made 73 appearances for Die Roten across all competitions and he is contracted to the club until June 2025.