Husband is another one who i'm doubtful we'll actually be able to fit into 20. If Garbutt stays, then can you afford 2 "older" LBs? Or you have to consider Husband as true CB which i'd be a bit worried about.
Ward has improved as the season has gone on imo, I think people like Anderson and Robson are more at risk.
Ship Out
Howe
Thorniley
Sarkic
Anderson (harsh, but he didn't do enough)
At Risk
Lubala (somethings obviously gone on, if you're not gonna play him then stick him out on loan or flog him)
Husband (as above, he's good enough but I think only 1 of him and Garbutt will stay - and i'd rather Garbutt)
Robson (Also think he's fine for league 1, but he's the sort of player we should be looking to replace with an u-21).
Kaikai (Big money, inconsistent, wouldn't be adverse to him staying)
Whether we go up or stay in league 1, re-signing the likes of Madine, Garbutt and Stewart should be a priority.