With 6 OAs, should be some wheeling and dealing coming soon.
Not counting the OAs, I see the potential of 6 returning D, 9 forwards from their roster last year:
Forwards: Whittaker, Washkurak, Schwindt, Christner, Varga, Prueter, Hardie, Portakalis, Whitson.
Defense: Canade, Walker, Cella, Harley, Penman, Callaghan
Not listing the draft picks, or OAs. have I forgotten anyone?
The OA's are likely going to be RD Davis, LD Ham and LW/RW Isaacson. McHugh may be able to get a mid-round pick or two in return. Clarke and Wells are longer shots but you never know if there is a team needing a cheap OA to fill a role. That should be a situation that solves itself quite fast.
Walker, Christner and Cella are probably released. Walker may just decide to retire if his injury really hampered him. He won't be making many OHL lineups anyways, so his best bet would have been going to the QMJHL this year. I didn't see him in any QMJHL training camps.
LW Hardie - C Schwindt - RW ???
LW Canade - C Prueter - RW Isaacson
LW Whittaker- C Washkurak - RW Varga
LW Portokalis - C Del Bel Belluz - RW Whitson
EX: C Stubbs/LW Dodig
LD Harley - RD Ham
LD Penman - RD Davis
LD Del Mastro - RD Sharpe
EX: LD Holm/RD Spence/LD Callaghan
G Edmonds - G Ranger
G Dunsmoor
Not including prospects, but most of the good ones are already in the lineup or will not have a spot.
So I would imagine they are going to rotate Stubbs/Del Bel Belluz, Whitson/Dodig (Whittaker can play all forward positions so he can move over to the RW if Dodig can't), Holm/Del Mastro and Sharpe/Spence a decent amount. The defense is set quality wise, especially since there is still Rosenthal and Jeffers out there as prospects. Dunsmoor may be kept as a 3rd goalie if a team doesn't give up a pick for him to be a backup or something. DiLauro could then be the 3rd goalie in case of emergency.
I originally had Varga and Whittaker getting dealt as well. They may decide to keep one or both, but depending on how prospects look in camp and what they get in return, I can see one or both getting moved out. They may also just decide to trade them out and acquire someone else with more skill as well if the market dictates it. At the very least it looks like they need a top 6 RW, and I think Charlie Callaghan gets moved to a team which can give him some more ice time. He's a top 6 quality guy who is only an 02', so he should be able to get a decent return (at least more than the 8th round pick used to select him).