I'd say come late Sept - early Oct, he should be big enough. Unusual double brow tine he's sprouting on his right side. Is this picture from a trail cam? Would be interesting to see him again in a few of months.
I hate to say it, but that pic was taken 13 years ago last month. I never saw this buck again, my oldest son who was 12 at the time, killed the next one in line on a rifle hunt.