The thing is that you want attackers that are getting chances. He's obviously hugely frustrating, but he's also incredibly raw still. There are any number of paths to a footballer, but I can absolutely see one where he takes another leap up the progression ladder, and suddenly is an absolute monster in terms of sheer productivity.
He's undeniably one of the best players in his age group in the world already. His numbers are still good, even this season. And honestly, he could easily have 10 more goals with some composure. That's not something that's easy to find out there.
The ONLY reason I'd consider selling him is if it's the absolute only way to keep our club solvent. Fine, that's ridiculous if it's true but needs must. But in terms of the footballer and the potential - I don't think we'll be able to 'replace' him with someone in his profile that is any better.