Paul Pogba, who carried Juventus to CL final? Paul Pogba, who carried France to World Cup trophy? Paul Pogba, who carries our current Manchester United side full of midtable fodder players, previously managed by a washed up has-been and now a non-manager whose only relevant CV is Cardiff relegation? I can't be bothered to look up the statistics again, they're posted twice in this thread (spoiler alert: Only Messi and Ronaldo had higher individual contribution to their teams than Paul during previous season) but surely no sane person can question PP's world class quality. Why else would Real Madrid and Juventus, both continental powerhouses and both miles ahead of us, be so desperate to get him?
It's very optimistic of you to hope that we're capable of "smart investments", because since SAF's retirement we've had two of those - Paul Pogba, and Zlatan Ibrahimovic. The rest oscillate between "decent, but hoped for more" (Lindelof, Matic) to "absolute embarrassments" (Fred, Bailly, Alexis). I don't think there are many clubs worse than us when it comes to transfers... if any.