I actually think this is going under the radar a bit. He's being compared to Nunez, yet their records are nothing alike. Without a release clause, his value would have been £150m+ and obviously we'd have ruined football, but at least people would have noticed. As it's only £60m (according to media, even though it's less) it doesn't 'feel' like a big signing. If we weren't looking at signing him e.g. we were mid-table and couldn't, how much notice would we have paid to him? I don't watch German football, don't sit down to watch Norway's latest friendlies, so what would I really know about his play or his record in more than once season?
I think (and hope) the PL is going to get a big surprise next season.