I think he made an educated guess based on those figures. People hammering him for "info" and he took a punt. I would of backed their offer over ours also!
edit - also some credit needs to go to the old board who had this deal done back in feb at probably a cheaper price. They got TC here(the hardest part!), filled them team with quality players on the field but also guys like Gibbs, Graham, Ryan, Lewis, Heighno, Gordon etc who TC hangs out with and have become his close mates along with Gallen etc. Players recruit players and our playing group is a massive selling point.
Carney has a history of being a loyal guy but this blows me away.