Connor Brown did his ACL two weeks after Mikheyev, had surgery immediately ... and still had all the same issues coming back last season, or probably even moreso.
Pavel Bure had a 23-goal season at age 24 coming back from this injury.
I don't blame the player for wanting to get on the ice and try and help his new team, and I don't blame the team for giving him a half-season to see if he could help a playoff push. And I don't think his 23-24 would have been much different either way because it's the getting confidence back into your game and trust in your knee that's the hardest part, not the physical recovery.