It would help to know (1) what goalies are in FA that might be helpful and (2) which defenseman Rielly would replace. On the whole, Varlamov is a sell high, but as you have .8 of a #1 goalie in Khudobin (or until whenever Bishop comes back), and two backups in Halak and Sorokin, you might not want to let go of a #1 or #1A goalie who is decent player in a great position.