A Grade 2 Calf Strain takes around 4-6 weeks to fully recover and it hasn't even been 3 weeks since he suffered the injury in Game 5 against the Rockets, so he's gonna be out the 1st two games of the Finals for sure.
That 4 week mark would be next Wednesday, which is Game 3. The best the Warriors can hope for is that he'll be back for that game and play the rest of the series, but even that's unlikely. If he does come back, I think it would be around Game 4 or 5 and even if he does return, he's not gonna be the same Kevin Durant who was dominating the playoffs before the injury. He's gonna be rusty and it'll take him a bit of time to find his rhythm - time the Warriors don't have.
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