I'm the last guy you should ask about the new CBA. Hell, any of them. Haha.
Perhaps he's just training with the KHL team because he's a local. How many times have we read reports of former Coyotes training with our team in Scottsdale, just because they live here? It always generates rumors. Usually it doesn't mean anything.
Either way, I suspect Edgars wants to play in the NHL, first and foremost.
He's got some options:
Play in the AHL this year, or play in the KHL this year.
The AHL route won't pay nearly as much. He'll be far from home, playing in small US cities, and riding the bus. I'm sure in Riga he'd be famous, well compensated, and would be playing in a top league. So that's the upshot of signing in the KHL this year. I think there's a catch, though, and one I suspect he's smart enough to recognize (especially given what his brother went through as a North American Pro). If he goes to the KHL, and fails to impress, while simultaneously blowing a year of NHL ELC eligibility, he might never get another two-way NHL contract again. However, if he comes to play in the AHL, wastes a couple of seasons, and never truly gets his NHL career going (just like his brother) the KHL will always be waiting for him (just like it was for his brother).
I think it'd be short-sighted for Edgars to jeopardize his NHL chance just to play for his "fall back" league a little sooner.