Zetterberg's recapture penalty would be 4.300001M if he retires.
Then we could think that Zadina comes in and plays on Zetterberg's roster spot, and Zadina will cost his own caphit 925k + Zetterberg 4.3M recapture = 5.225M.
So Zadina + recapture would be cheaper than Zetterberg himself in total, and this Zetterberg recapture would last for 3 years, same as Zadina's ELC. After 3 years, Zadina would get his extension and cap effects could be at same level with 5-6M contract.
That's a scenario.
But my gut feeling is LTIRetirement. Don't think we'll see that recapture. Guy is injured and can't play because of an injury. Why not go and use LTIR ?
Player would still get money 3.35M + 1.0M + 1.0M = total 5.35M and team would get cap help. The situation benefits both sides, so imo, LTIR way is a no-brainer.