No - I just don't agree with your argument.
I think every player is different. I'm not sure either how much Rom is going to improve but players like Drogba didn't really fulfill their potential till their mid twenties. You can't say what's going to happen. What you can say is he's just turned 22 which means he has 10 years at his peak and he's already and probably will continue to be a 15-20 goal a season player.
Even if he doesn't improve in a couple of years we won't have lost any money but we will have had a top class striker in that time. If he does improve then money in the bank.
There's a big difference between Rom and even someone like Barkley or Deulofeu. It's not just potential. He's performing at a high standard already.
So do you want him to force a move or don't you, Ad?
You can't have it both ways.