The list of players off contract at the end of this season is well known, Cogger, Doorey, Elliott, RFM, Foran, Harding, Harper, Holland, TKatoa, Montoya, Sue, Tass, Tolman, Wakeham and Winters-Chang. There are a lot of question marks in that list, some of them may well make it at NRL level, some could be reliable back ups (a necessity in a 30 man squad) and some will need to find a new home. Personally I suspect Tolman will be retained on a 1 or maybe 2 year contract. If he wants more then he might give ESL a go for a 3 year contract, but I suspect not given the age of his children. The rest are all basically playing for their NRL futures this season. Who (gets renewed) is nothing more than a guess at this stage.
"Letting players go" (that are still on contract) is not at all easy, firstly they have to want to go which usually means having another team to go to that is offering them the same and/or a higher and/or a longer contract. If nobody wants them they are rather unlikely to give up their contract.
Go Dogs