Just one of the several articles about this matter.
http://www.express.co.uk/news/world/...e-against-ISIS
There has been reports that china is about to deploy "military advisors" (we all know what that means) in Syria, but there have been several other reports of actual chinese military personel being deployed in Syria, which are to link up with Russian forces in that country. Also a few days ago it was reported that Iran is going to deploy about 1k marines in Syria to fight alongside Russians. Seeing that there are already heavy Hezbollah presence in Syria, take into account that Russia and Iran seem to have armed Syrian forces with new equipment.
One has to wonder what the end game for Syria is going to be, is Turkey going to stand and watch as their politically backed rebels get mowed down? Is the west going to hand Syria over to Russians and Iranians? Airstrikes alone don't win a war, ground forces do. And so far the western coalition has not been willing to get boots on the ground in Syria.