It is possible just as it might be possible for Russia to get us to leave Syria to Russia and Iran to fight ISIS and the other groups opposing Assad-- but not likely. Getting Russia to do what we want would require incentives for Russia we cannot provide. As an example, Russia's objective is to gain air superiority in the Middle East and get us to back off. We want enough control of the result in Syria to keep Turkey on our side. Erdogan of Turkey and Putin could agree on action in Syria to give Turkey the land in Syria Turkey wants, kick us out of Turkey (we need our Air Force Base in Turkey to launch large bombers) and give airfields and bases to Russia. Russia already took steps to get air bases in Iran when it got temporary rights to fly out of Iran to attack targets in Syria. Russia is supporting the Taliban in Afghanistan. The taliban is growing in strength and we are expected to need to add a few thousand more troops in addition to the 9,000 we currently have there.