My theory is that Cormack wants the whole back room structure sorted; coaching, academy. Basically a whole DNA - pathway to first team, pathway for coaches to step up too.
This whole "three year project" is more about Thelin leaving a legacy on the club, an imprint.
That's why he has backed Thelin a hell of a lot more than Glass, Goodwin or Robson because they weren't offering that. And I think results wise, Thelin winning the cup and banking £6m+ from Europe, that was probably ahead of schedule - the club likely were aiming for that in his second or third season.
It would also explain why Thelin doesn't feel the need to throw in Bilalovic and Kjartansson. I think he's quite happy to develop these guys and have the next manager enjoy the fruits of his labour.
Like I said, just a theory. If he gets sacked next week, someone delete this.