I would hate to see Boston go, but they are still negotiating with his agent. They want part of his signing bonus back if he should get suspended. Is that too much to ask? Boston is a drug risk (Coccaine, steroids?) and is coming off a knee injury. Guaranteeing five million to a guy who may be suspended for multiple games is far too risky for the Cardinals ownership. On the bright side they do look to have a gem in WR Jason McAddley.
Plummer, on the other hand, needs a change of scenery and will probably do nicely in Denver with their proven ground game. For the record, the Cards other option at QB is Josh McCown, no relation to Cade McNown, but just as productive.