The guy has really impressed me. He looks like he has the right mentality. Even when he scored the own goal, you can see in his face he was like:: "ah well, lets get one back".
He is definitely worth up to 50m in my opinion. The thing is, if we get him, we would have 6 CBs - Danilo, Bremer, Rugani, Gatti, Califiori and Djalo and intending to play a back 4 so 2 positions unless we intend to use Danilo and/or Djalo as full back options as well.