It varies. Don't reach on him before the 10th in a 12 team, but if you are willing to gamble you can get him later than that as well. I got him in the 14th round of a 14 team league, and even though I had Pudge, since it was a deep league he's good insurance and right now he's holding down the fort at CI.
If you want to make sure you get him, select him around the 10th or 11th. If you are willing to wait, and get a pontential steal on him, target him around the 12th-14th rounds. He won't be there any later, that's for sure. Bottom line, he's not worth the 8th round, but he certainly can be with the 12th.