We already know via President of Hockey Operations Bruce Garrioch that the plan is for Hogberg to graduate to backup with Anderson mentoring him. Garrioch has reflected on how the Senators aren't likely to give Nilsson the 3 years he'd be looking for in term. They won't want to risk having a Condonburglar situation in their hands.
It's possible that this could be a strategic leak with the team open to bringing Nilsson back, but only on a favorable deal. This would likely mean that we say goodbye to Hogberg. While Hogberg is far from a blue chip goalie prospect, there is a shortage of NHL goalies, and given his performance to close out the AHL season, I think he'd get claimed on waivers if he does not make the Senators. (Edit: Hogberg is not waiver eligible for another season, so Sens do not have to worry about a claim, they only have to worry about whether he'd sign for another year in the AHL)
From an asset management standpoint, the smartest move would be to trade Anderson and keep Nilsson. Unless our budget is incredibly low, Nilsson's extension shouldn't sink us, even if he doesn't live up to it.
I would expect Condon to either be bundled into a trade where we take on low salary LTIR cap, or to be bought out. It doesn't make much sense to keep Condon. The organization will save a million dollar through buying him out, and unless the plan is to start Daccord in the ECHL, we'd have a logjam in the AHL.