Stefan Müller has a contract with HC Lugano in place which is valid until the end of the 2021-22 season. He would thus play on loan/via B-license for HC Ajoie if the teams were to decide to take him on.
The Austrian, who is in possession of a Swiss players' license, has been with HC Lugano's organization since the 2014-15 season. Last season, he mostly suited up for the HCB Ticino Rockets, posting a .872 save percentage in twelve games.