It starts getting pretty dicey as they move into their 30s, though, and you just don't want to have big liabilities out to blokes nudging their mid-30s. Put it this way: Koroisau will play his two-year deal for the Tigers in his age 30 and 31 seasons, Frizzell would start any deal at the Tigers in his age 32 season. I don't hugely object to having a look at him but if he wants a third year I'd run a mile. I'd be happier with one and a player option, but I'm sure he'll get offers for two at least.