What can you tell us about this Gulen guy? He opens "schools" across the US, looks like some kind of cult. There is cult near me called the Maharishi, these are hindus that claim they can bend spoons with their minds and levitate, famous people go there for $100,000 a stay for spiritual relaxation.
He obviously has some major money
What I can tell you about him is that he is a religion monger who ran off to the USA during the snackbar cleansing of February 28, 1997. Up until then he had been supported by the previous Turkish governments as a contra-leftist tool. Yes, the previous governments, although they all varied in their political views, always nurtured Islamists to supress leftist movements. They kept them on a leash though.
Back to the topic: USA decided Gulen was too influential a tool to overlook and got him covered. As Darksoul said, he indeed lives in a manor guarded by the CIA. In time he started expanding his influence to build religious schools mainly in poverty-stricken countries. He acted like a philantropic missionary. He led a religious cult called Nur (the Holy Light) which was established by a madman called Said-i Nursi.
The Tard had always been an avid follower of him. And when he came to power also as a US tool (read
this link to grasp what I mean), they held hands. The Tard started installing Gulen's henchmen in all kinds of highly important positions from the army to jurisdiction. Everything was going really fine. Together they managed to capture all media bodies and turned into a savage hydra. They started the notorious trial series to imprison patriot generals and incriminating everyone as they wished through their loudspeakers.
Things went to shit when the cake was in front of them. Soon they started fighting about who would get the bigger piece. It is then that the Tard eventually snapped and started evacuating the installed pieces. This coup itself was probably instigated on purpose to lure the remnants out of their military barracks. And you know the rest of the story.
I tried to keep it as brief as possible. But as you can see, the shithole goes as deeper as you would like it to.