From what I gather...and theres no inside source here...Diarra isnt a fan of modern medicine and also likes to be contrarian. So he refuses to get COVID-19 tests, which you obviously need to play. Mike Young cant change the protocol to get tested, and Diarra shouldn't be made to put his personal beliefs aside. So no test, no play.

Could that change? Sure. But it would involve Diarra changing his views, because the regulations arent changing.

Is it possible? Yeah, and Im sure Mike Young has no problem with him exercising his views and would welcome him back, but he cant do so unless Diarra gets tested. So we are at an impasse

Possible, yes...likely? No