See exhibit Javier Diaz (http://wisjournal.com/HBD/Pages/Popups/PlayerProfile.aspx?pid=371083 ). He's only 2 seasons removed from an MVP season, but see how far his stats fell in Season 15 while only dipping slightly in ratings points.
At this point I'm leaning towards declining his option and using the 5+ million in savings to sign another guy, but it'd be a shame to lose him if he's going to perform at an All Star level again. Thoughts?