I would imagine this means that Jason Clark won't be getting a new contract and Holmes is his replacement. If Clark going and Holmes coming in gives us the money to give king the contract he wants then it could e a good move. From what I've seen Holmes is a more dynamic second row and a decent replacement in the squad.
This is a start if it's confirmed, there are more important signings to be made (Mamo and King are the 2 I'm thinking of as priorities here). We definitely need a new right centre, we could have 1 or 2 halfback spots to fill as well depending on whether Austin and widdop both leave. Could be a lot of changes going in to next season.