Klaus I'm not sure that's fair for the concerns around the transition or certainly not from what I felt. The main concern for me was the way he could bully and dominate defenders in Portugal in order to get free and be able to get his shots off. Right now I don't think he has been able to do that I think premier League defences have shown that those concerns about the difference in level do appear correct and he's not really able to get chances like he was.
The other thing for those who had seen him there was talk about his ability to run in behind and get away from defenders and his physicality but so far I don't feel these are exceptional. Yes he has grappled with defenders and been a nuisance but he's ended up edged out and on the ground a decent amount so I don't think been able to impact on that way.
I recognise he's probably an annoyance for the opposition and that will free up things for other players but I don't think that was the main talking point in the summer. It was more than he'd been underestimated and you'd see in the league that the same things he did in Portugal he could do here but right now that isn't happening.