Greenwood not having any buyer yet is understandable with the baggage he has.
AWB is on £100k per week, I doubt many clubs would want to pay that or more for a limited right back. I am not that sure the club is actively trying to sell him anyway as he fits the homegrown quota.
Lindelof is on £170k per week. No club will pay anything close to that for an average 29 year old player.
Pellestri just doesn't have any decent output as an attacker, so I can understand why there are no potential buyers.
The Fulham player is Pereira. We sold him for £10m. He was 26 when we sold him, he is 28 now. He never really showed much on his loans to warrant a high fee unfortunately. The talent was always there and he only started to realise that potential when he moved on and started knuckling down. Also bearing in mind at 26 with not really showing anything great by that age, it is hard to see a player start performing to a good level going forward if he hasn't already done so by that age.
But £10m for an academy player is still better than nothing.