Every player who have signed contracts this close season apart from Jim O'Brien have a 2 year contract.

Crowley, McGoldrick, Randall, Jones, Cameron, Rawlinson and Slocombe.
Add in players who still have 2 years to go Palmer, Austin and Langstaff.
That is almost half of the squad.

I always understood that it was considered that ideally players contracts should be split evenly between 1, 2 & 3 years to allow smooth transition from 1 season to the next.
Only Morias has 3 years to run.