The U.S. national team midfielder has requested a change of scenery during the January transfer window.
Jermaine Jones is set to miss Schalke's training camp in Qatar as he considers a move away from the Veltins-Arena.
The United States international has been a regular starter for Schalke this season but has attracted criticism for his attitude in some fixtures. The 32-year-old appears to have decided his future lies elsewhere, with S04 releasing a statement to explain his omission from the club's roster in Qatar.
"The midfielder, who is under contract at Schalke 04 until the summer of 2014, has asked sporting director Horst Heldt to allow him a change for the second half of the season," it read. "To consider other options the 32-year-old will not travel to Qatar."
Jones is poised to play in his first World Cup this summer after establishing himself as a fixture alongside Michael Bradley in the U.S. midfield during qualifying. Should Jones make a move to MLS, D.C. United would have the first crack at securing his services, though the player would be exempt from the allocation order if he signs a designated player contract.