The Netherlands international is nearing full fitness again after a knee injury, but teammate Benedikt Howedes might need more time.
Schalke has received some encouraging news from the treatment table ahead of the Bundesliga restart as Klaas-Jan Huntelaar is set to make his comeback after a lengthy spell on the sidelines due to injury.
The Netherlands international has not featured for the club since August, having been dogged by cruciate ligament injuries. However, the 30-year-old is primed to return to full training with the club ahead of its first fixture of 2014 - a trip to Hamburg on Jan. 26.
"My longest preseason ever had finished," Huntelaar said on Twitter.
Jens Keller's side has been hit hard by injuries so far this season, with defender Kyriakos Papadopoulos and midfielder Marco Hoger among those to have have joined Huntelaar on the sidelines.
Captain Benedikt Howedes also missed much of December with a thigh injury, and the defender wants to take his time before returning to action.
"It'd be great if I could come back against Hamburg but I shouldn't rush things. It's difficult to say when I'll be back, in fact, as I've only done light training so far, without any sprints or tackles."