Parayko is probably the #1 target of who is left. Signed for 7 more years. You'll get 3-4 good years out of him, maybe 5. But he brings exactly what the team needs. Great two way play, will help the PK. Can help mentor Power and would give us an elite defense when Power rounds into form. I think his acquisition cost won't be too extreme given his contract.
His offensive game has suffered both this year and last and he has a full NTC for the next six years.