In a sense ,we still can maintain our shape and we can act like nothing has happened because we are losing a prodigy not a key player.Look at Roma,they lost Marquinhos who would've gone on to become a Silva for them but have they actually regressed ? No they havent.Is his loss affecting them ? No it isnt.They have moved on restructured their team and doing well.
I'm not comparing Pogba to Marquinhos in terms of importance.But with that money we can restructure our team,add quality and still be a winning team.And by the time,we have spending power ,we can aspire for greater things without selling anyone else.
And it doesnt necessarily have to be replacing him.What if we sign a quality winger and a quality creative midfielder with that money ? We'd actually more potent,and our defensive shape would still be great too.Pogba will go on to become one of the world's best midfielders but seriously dont act like he is going to carry us on our shoulders in the future.
Despite all this ,my first choice is retaining him but i wont lose sleep or anything over losing him, as i have faith in the think-tank of the management.They know what they're doing.Its just a debate at the end of the day but i know tuzzers who will ignore most of my post and will be calling for my head.