Fiorentina, Celtic, Beşiktaş, and Stuttgart are tracking Köln midfielder Eric Martel. The 23-year-old German is reportedly a realistic option for the summer window because he is in the final year of his contract. Martel has been a regular in the Bundesliga, playing mainly as a holding midfielder but also playing in defence when needed. He joined Köln in July 2022 and has made 27 appearances, scoring two goals and providing two assists in the Bundesliga this season. The former Germany U21 international has a current market value of €8.00m, according to Transfermarkt.