Both their contracts end the same year. So you're hoping that 1. Spriggs will for sure develop into a starter by then? (which i think he already is, but case in point) 2. He would resign after not getting a chance until 2020? So then during 2019, you offer him a starters contract without ever truly (possibly) never starting? And then you still have Bulaga on the team, so he'll become a cancer?
Doesn't seem well planned. I really think they didn't expect Bak to develop, or Bak to resign...and then he did.