1. FC Köln is interested in Stefano Russo, a German-Italian player from Arminia Bielefeld. According to 'Sky', the Bundesliga club had previously expressed interest in the 25-year-old midfielder last summer and may make a new attempt. The potential transfer could be connected to the future of Eric Martel, whose contract with Köln is set to expire. As Russo's contract with his club is valid until 2028, Köln would be required to negotiate a transfer fee for the player. Russo has not yet played a Bundesliga game in his career. In the current 2. Bundesliga season, he has made 20 appearances, scoring one goal and providing one assist. The midfielder has one cap for Germany's U19 team and a current market value of €1.00m, according to Transfermarkt.