Why did the Bengals back out of the Arnold Ebiketie trade? #Bengals #NFL

I understand wanting to protect a projected third-round comp pick. What I want to know is how the Bengals got all the way to a deal for Arnold Ebiketie before that pick changed their answer. Cincinnati earned my Benchwarmer of the Week for this one. Full argument coming in Episode 296. #Bengals #WhoDey