Would be surprised if the deal for Murray is anything other than 50% retained or 25% + a 3rd team retains an amount that brings in Murray's AAV at 3M.
Then they grab another goalie (Comrie?) in UFA, and run a tandem. If neither works, they grab someone at the deadline. The leafs spent the majority of last season getting brutal goaltending (everything after November) - and wound up with 115 points. I prefer shorter term, younger options than blowing the bank on AAV and term on one guy (Campbell, Kuemper) - particularly when those two haven't shown the ability to stay healthy either.