Andray Blatche, who’s played great basketball in Gilbert Arenas’s absence, told the Associated Press, “Gil’s going to come back next season humble.” The best that Wizards fans can hope for is that Gilbert Arenas comes back next season fit. He’s had plenty of humbling moments in his career. Who can forget when LeBron James iced Agent Zero at the free-throw line in the Eastern Conference quarter finals back in 2006? And it’s not a lack of humility that drove Arenas to bring guns into the Verizon Center. More than anything, what Arenas stands to gain from a stint at a halfway house — a sentence he began on Friday — is time off his injury-prone left knee. Last night, Arenas checked into Montgomery County prison for two days of processing and medical screening (and a taste of real prison life) before he transfers to the MoCo Pre-Release Center, where he will sit out the rest of his sentence. He needs to return to basketball physically fit and free of any prison trauma. And for what it’s worth, Blatche could stand to deliver a triple-doubles now and then after Gil returns.