If any midfielder needs to be sold, it should be Barkley first and foremost. Jorginho, despite some frustrating flaws in his game, is still decent enough to be kept around.
As much as Gilmour has performed well in the last 2 games, I think it would be unfair on him, who turns only 19 years old very soon - to suddenly expect top class performances week in week out. He still has a lot to learn, improve and experience. Having someone like Jorginho to help with that etc would be beneficial.