The " world class " tag gets attributed to a number of players in the PL and Spanish, German and italian leagues who obviously perform at high levels and have a good level of ability , but whether that tag is justified in the true sense of the word has to be highly questionable if they are only being judged on their performances at a domestic level. I have never seen Pogba perform at WC level for France , nor indeed the likes of Griezeman who is another who is touted as WC. The phrase is wrongly used to describe many players imo, and Pogba is one who carries the hype , moreso because he plays for the Rags. The media over-hype so many of their players to feed the frenzy of their fans, because they know it will be lapped up and spread as " the truth ". But he has to do a lot more to be truly judged as world class, and not just in the PL.