With respect to Gazza, he did preface his statement with "looking at his YouTube vids". I'm assuming the people who profiled him at Sky Sports did more research than just watch YouTube vids (though maybe I'm being overly generous to them - a possibility I fully accept). We both agree, for instance, that Llorente is basically a poacher / target-man type striker (which is why I doubt we're in for him, though I wouldn't have a major problem if we got him on the cheap). But I guarantee I could trawl through his YouTube vids and find plenty of "evidence" that he's a dynamic forward, who is always on the move. It's all in the editing.
Let me be clear - I have no idea if Njie can be effective on the right. I'm just basing my view on several different profiles of the player - I've never (knowingly) seen him play. But I don't think a YouTube vid necessarily trumps those profiles. We'll just have to wait and see I guess (but I fully expect him to play more on the left of course).