Harley's a greater risk but a greater pay-off.Bennell wanted to move home after he and his Mum had a BBQ at Ross's house, was pretty much a done deal before you even met with him. Yarran isn't less risk than Bennell, Harleys not playing because he's injured. Yarran isn't playing for some unknown reasons.
But while on Yarran, remember he had a calf injury too, until it obviously wasn't a calf injury.