I'm assuming this guy is buying into the history of Casey's inability to remain healthy for a full year. I traded him a couple of weeks ago when his value was peaked, but I never would have dropped him.
Its a no brainer to pick him up, especially if you can stash him on the DL without dropping anyone. If you need to drop Raffie to get him, then it might give you pause, but I am not a huge Raffie fan, so I'd do it. Casey has a great average and could come close to matching Raf's power numbers, IF he can stay healthy.
"Plaque is a figment of the liberal media and the dental industry to scare you into buying useless appliances and pastes."