At what point does he cease to be Flyers "property?" If I understand correctly, at age 24, draft rights expire without a contract:
https://internationalhockey.net/nhl-draft-rules-what-happens-if-a-player-doesnt-sign/
MM turned 19 on December 9th. If this agent's assertion is anywhere close to the truth, or Putin doesn't relent, or whatever, the debate becomes moot in 2028.
Fans and management might be well served if they think of MM as "icing on the cake" we might acquire, but plan otherwise. If I were Flyers management, there wouldn't be any picks from the Russian Federation or Belarus, and even trading for those players may be high risk.