Leicester City fan here.
Gray is a real mystery. When we bought him from Birmingham City, he was definitely 'the next big thing'. Over the past few years we've earned a bit of a reputation for buying players and taking them on to the next level, and it seemed like Gray would be another in that line. But he turned out to be incredibly frustrating, and he must have really pissed of his successive managers and teammates. He did show flashes of talent, and there were a few games when he came on and lit up the place, but it was only a few, sadly: all too often he held the ball too long when a pass would have been the sensible option, and he sometimes seemed to disappear from view altogether. I suspect, on the basis of no evidence other than watching him, that he thought it would fall into his lap without trying - which is odd when you consider he was playing alongside people like Vardy, Albrighton, Ndidi etc, all of whom put in 100% all the time.
Maybe Benitez will be able to unlock his ability. I hope so, because I hate to see all that talent wasted.