FSV Mainz 05 is working intensively to sign Stefan Posch on a permanent basis. According to 'kicker', concrete talks are ongoing with Como 1907, and a transfer fee in the mid to high single-digit million range appears possible. Posch joined Mainz on loan in the winter and made an immediate impression. Mainz wants to finalize the transfer as quickly as possible.

Tuttomercato reports that it is uncertain if Stefan Posch will stay in Germany or go back to Como after his loan at Magonza. During his last six months on loan, Posch had 16 appearances in the Bundesliga and 4 in the Conference League, and he scored 2 goals.

Mainz 05 wants to keep loan player Stefan Posch. According to 'Sky', Mainz has initiated talks with his parent club, Como 1907, and is exploring options for the Austrian's further employment. A purchase option was not agreed. Stefan Posch is under contract with the Serie A club until 2029 but does not have a major role at Como. There are also said to be other interested parties.

Krone.at reports on the discussions between Philipp Mwene and Stefan Posch regarding Posch's transfer situation. According to the report, Philipp Mwene said that Stefan Posch called him in January to ask about his well-being and what it was like in Mainz. The report states that Stefan Posch hardly played at Como in 2025 and needed more playing time before the World Cup. Mwene also said that once it became clear that a transfer was developing, he contacted Stefan Posch almost daily.