I think the comparison to Kanye is a pretty good one. Pogba's ego and his belief in what his talent is is as far away from the reality as Kanye's actual talent is in comparison to his ego. Both men are incredibly talented but neither man is ever going to be what they think they are.
The numbers being talked about since last night are utterly incredible. To put them in perspective it would make Pogba along with Neymar and Messi the best paid player in the world. In fact I think he'll be earning more than Neymar. For someone who currently isn't even the best midfielder at Juventus that quite frankly is ludicrous.
Pep said last week that the most important characteristic he looks for in a player is their belief in the idea of the 'team' as opposed to the individual. Pogba is someone who is incredibly driven and self motivated, but it's also built around personal achievement and personal accolades rather than collective ones (hence his regular comments about wanting to win the Ballon d'or). He isn't a Pep player.
It's a shame in a way that his transfer fee and wages will probably overshadow his abilities but when the deal itself is so far removed from the reality of the market place it's no surprise. If he goes to United it will end in tears and a move to Spain I'd say within 3 years. I still expect Madrid though to have something to say about him this window.