If this number was given immediately in first day wouldn't have batted an eye (Pogba just asked now and wasn't interested before?), but the fact is Agnelli and Marotta talked up this number will be reserved for a player worthy of it, a fantasista type of champion player. Allegri talks up AM types he wants, Marotta scoures for choices, can't get any, says few days ago no such player is coming, that Pogba (and Dybala) can play Trequartista (Allegri won't play him there Imo). And now Pogba gets the nr. And you will have an in house marketing boost for sure instead of an outside one the initially sought out.
It is trivial stuff but it's hard to claim it's not related to our initial transfers priorities that failed to materialise.