Seibold, in the interview with Weidler, said he'd never seen Gordon play before these trials (maybe a reason he's not in the top 30 this year?). He also said it's likely, due to dispensations, that he'll be selected in the 22 before Rd 11.
@Woodsie, Seibold mentioned that the club has a great hooker in Lachlan Croker.
Balancing the salary cap may be another reason Gordon is not in the top 30. There is $650k available for development players. Of that, perhaps Gordon & Humphreys are on $200k each and players like Boyle are on the minimum $150k for top 30?