The on-loan Grasshopper Zurich striker, whose deal ends in January, suffered the injury during his side's 4-2 SPFL Premiership defeat by Dundee United on Sunday.
Manager Derek Adams, who did not speak to the media after the defeat, revealed his frustration with some refereeing decisions and with his side's defending. United took the lead through a Gary Mackay-Steven penalty after Mark Brown was adjudged to have brought down the winger, and Adams felt Brian Colvin rejected better claims from County's players Stuart Kettlewell and Kevin Luckassen. "They get a penalty that in my view was not a penalty, and we had two claims turned down. The second and third goals, we could have done better defensively, and the fourth goal was offside."