Former Tottenham and Portsmouth midfielder Kevin-Prince Boateng is stepping up his fitness ahead of a proposed move back to AC Milan.
Schalke suspended Boateng last May after they told him that he has no future at the club when dropped from the squad, along with Sidney Sam, due to disciplinary reasons.
Boateng has not played this season and he is keen to get his career back on track in January by winning a deal at the San Siro.
The 28-year-old has now agreed a deal with Schalke to cancel his contract early by mutual consent to pave the way for him to join Milan.
Boateng has been allowed to train with Milan up until the end of December and the player is leaving no stone unturned in a bid to be fit for his possible return to playing in January.
The attacking midfielder has been working hard on his fitness with a specialised altitude mask to increase his endurance to ensure he is ready to play should his move to Milan go through in the New Year.