According to a report from Florian Plettenberg, Mainz made an enquiry about Borna Sosa ahead of the January window. The player currently has no thoughts of a move despite limited playing time. Sosa holds a contract with Crystal Palace until 2028.

FSV Mainz is interested in signing 27-year-old Croatian-German international Borna Sosa. The club is interested in signing a player for the left defensive side in the winter, and a loan deal is considered the only probable model. Sosa, who transferred to Crystal Palace last summer and has a contract until June 2028, has only made three Premier League appearances.