In normal cases, yes, but cops are put to a different standard of conduct for a reason. I have come to the defense of other cops before when they were being wrongly hounded; I don't think this case is one of those.
Floyd is dead and died while Chauvin was kneeling on what looked like his neck, while saying he couldn't breath repeatedly. Chauvin never seemed to pay attention to what Floyd was saying once he had him on the ground, and it's far easier to expell air from the lungs than it is to pull air in when a weight is on top of your neck.
I think they won't get murder, because I don't think there was intent at all.
Wanton disregard...I think they might make that stick, depending on what the autopsy shows. Because if it wasn't solely fentynal that killed Floyd, then Chauvin bears some blame and guilt for his actions (or lack of action when he ignored Floyd's pleas while on the ground).
The only way Chauvin is at all innocent is if the fentynal in Floyd's system had rendered him a mobile corpse before Chauvin got to him, and I haven't seen convincing evidence to support this. If there is any, it will end up in the trial, and if it's solid, Chauvin will walk out a deservedly free man.
But that is a fringe possibility, and why I think the most likely outcome will be guilty on manslaughter, with the murder charges dismissed.