the problem with that approach is we then may get a more valuable player who wants to go or is tapped up and then what do we say? Cortese will be running this like a business and won't let the player dictate. The only thing I can see as "unfair" from the club would be if his transfer fee is set too high. If they "let him go", they need to pay up his contract and if there is a club willing to take him, then he gets the pay-off and walks into another contract. Life isn't like that and a club should be a "sensible" fee for him.
In my eyes, (can't remember exact numbers) if we paid Brentford 200k for him, the club may well value him now at 300k (just for example and take into account that increased wages mean increased value too), so if a club offer 50-100k, that is too low against the asset value and the club are right to ask for more. If someone offered the original purchase fee or close too, then the club would be perhaps wrong to hold out for more as he has not been an active first team member. However, to let him just go when he is a valued asset does not make sense.