Geelong is about to reply to the AFL's "please explain" as the Cats brace for a potential massive penalty over the secret concussion deal with Jake Kolodjashnij.Amid speculation over the futures of Geelong chief executive Steve Hocking and AFL chairman Craig Drummond, the club board held a crisis meeting on Monday to work out its response to the league.Also on Monday, Geelong captain Patrick Dangerfield said the club had "buggered up", but strongly defended Hocking.Pressure has been mounting on Geelong and the AFL since it emerged last Thursday that the Cats struck a secret agreement with Kolodjashnij, who had a history of concussion."We acknowledge this has been a challenging time for Jake, our club and Geelong supporters," Cats president Grant McCabe said in a statement on Monday."The board has met this morning to discuss our response to the AFL's letter We welcome this opportunity."The club remains committed to providing our players with the highest standard of care and support."Hocking was Cats chief executive and Drummond was the club president when the deal was struck two years ago with Koladjashnij.The Geelong defender signed a waiver that meant he effectively took on legal responsibility for future brain trauma in a bid to indemnify the club and its medical staff from potential court action.On the weekend Hocking defended the club in a radio interview and argued there was not a lot they would do differently."As a leader it's really important to take ownership and just lead through this