I see the biggest need on the 3rd line. Parise is the obvious thing, but he's 39 now and hasn't played in months so it's possible that even if he comes back it doesn't work out. If they make the playoffs, it's important to be able to roll out 3 lines that put offensive pressure on the opposition. Complicating matters is that Holmstrom hasn't really played more than 60 or so games in a season so he could wear down, and he's not playoff-proven. So, someone to provide offense on the 3rd line (and 2nd PP unit) would be good for this season. Or, maybe they just add Parise and hope Wahlstrom or Dufour or Maggio becomes that guy by next season?
If he shows up, probably after the winter break for his kids and the Isles have gotten closer to 40 games.
Also, the longer he remains out there, the more available cap space the Isles have for other moves. Let’s face, if Lou makes above he’s unlikely subtracting a body from the lineup as a salary swap. So, only Wally would be the logical outgoing salary.
Next consider max available playoff games is 28, but minimum is 16, probably average for a Cup winner is 22? Say, in the players mind a playoff game is 1.5 level of effort vs a regular season game. So, 22 could be viewed as 33 games.
Parise is probably balancing home life, giving Lou the opportunity to maximize cap space, and trying to time when to return based on schedule and also total games for him to actually play (wear and tear).
So, anywhere beyond game 40 puts him in 1/2 to 2/3s of a season played.