Have you all seen those adidas videos in their 'first never follows' marketing campaign? There's one for each of adidas' top clubs, with notable players from each team (Chelsea, Real, Bayern, Juve) featuring. There's no AC Milan video which suggests they might still be releasing them, but the only one they've got up for United is one featuring Pogba.
I know we saw it yesterday but it has a bit more context today as they've released the others. Maybe when he actually signs we'll get a full blown Pogba-United 'first never follows' video featuring the new kit.