How much does a new deal really matter though? If anything it just boost's the cost of the player if we sell, which whatever price you put on his head it wont benefit the team as we won't re-invest properly. Say's a lot if we sell Barkley, basically saying come get Stones and Lukaku too for big money.
No it's not about selling him.
It's about saying 'stay at the club, here's a long-term contract and we want you to be the future', rather than letting a deal run down.