I can see Lofthouse and LCP being in and around the first team or on loan to a decent league 2 side. The rest of the youth team I'd say, for now, it's too early to be relying on them in the first team. Perhaps Elechi could be ready but all I know of him is what I saw in the pizza trophy this season (where he did ok to be fair). Pizza trophy, 100% we should be starting several of them, but I'd say Slavi Spasov and Fabio Lopes have both had their growth stunted a little by injuries and need another season on loan in the conference, Nico Jones I have no idea where we stand as he went from one of our best prospects to unable to find a non league loan, and the likes of Gatlin O'Donkor and Tyler Goodrham, who look REALLY exciting, are still really young and should be playing U21 games with the odd pizza trophy cameo, not thrown into the first team way before they're ready. That's not to say someone couldn't have a major breakout season like Shandon and COD have done before but from my knowledge of the youth squad (which admittedly is far from perfect) I'd say not to expect too much next season except for Lofthouse and LCP trying to break in. 22/23 season should be where we really start to see the benefits of our youth setup and I think from then on we'll see a steady stream of youngsters challenging for the first team.
As for the first team, any player currently under contract will still be here next season. We never seem to pay off contracts, so unless someone comes in with an offer for Winnall, Clare and Hanson, expect them to still be around next season. I could see Burton making a move for Clare, but no doubt we'll want to recoup the money we paid so not sure they'd go for it. Hanson and Winnall, no one will be looking at them so they'll be here next year, with Hanson being seen as backup to RB and CDM so you can bet that KR will be signing 7 wingers and ignoring the lack of depth there again (although to be fair we could do with several with Mide and Barker leaving).
As for player sales, I'll be concerned if we don't go up. The teams above us are already sniffing around several players and I can see big bids coming in for our CBs and CamBran. I reckon at a minimum expect Moore to go, Atkinson I think we'll keep hold of and CamBran... Is a weird one because he clearly loves it here, and loves being one of the first names on the team sheet. I wouldn't be surprised to see him turn teams down if they cannot guarantee him regular first team football.