By Rohan Nadkarni If this is Green’s last season in Golden State, the punch to Jordan Poole may be a convenient reason, but probably wouldn’t be really why he leaves in free agency. In the Warriors’ first preseason game after the practice punch leaked around the world, Steve Kerr had this to say about Jordan Poole, who led the team in scoring in a loss to the Lakers: “I mean there’s a reason Jordan is where he is right now,” Kerr said Sunday. “Especially when you consider where he was coming out of Michigan as a late first-round pick. Struggling his first few months in the league. There’s a re…