I hope, and believe, it's all just paper talk. He definitely needs to be part of the first team squad this season, especially with Bolasie out until whenever.
Having said that, I do think some of us are building him up far too much at the moment. Don't get me wrong, I think he has the potential to be an absolute worldie. The skill set, balance and touch he has are things that can't be taught and are not that common either. But he's still 19 and has so much to learn. It will be completely understandable if he has more poor games than good ones at this stage in his career, and also expect him to drift out of games too. Initially I'd give him game time from the bench and starting in some of our cup games. Hopefully his form will be so good that Koeman is forced to start him more often, but I think the likelihood is that some on here will be frustrated by his inconsistency.