Matthews and Buono are the only coaches who fit your description and they're both under contracts for a long time. There's nothing wrong with going after young bright assistant coaches, preferably those who are learning from Matthews and Buono right now.
CFL contracts can be re-negotiated. As far as young coaches working with Buono and Matthews right now, I think there are a couple (Doug Berrry in Winnipeg springs to mind as a good example) although I would have a hard time recommending Chapdelaine (Buono assistant). He is not well respected by the players.
However, over the years, Matthews has been responsible for bringing great football people into the league and developing them: eg: Roy Shivers (hugely successful in BC and Calgary), Adam Rita, Ron Smeltzer and on and on.
That’s ridiculous. If the club even tried to talk to either of those guys in order to let them know that the Cats would give them anything they wanted (and let’s be honest: how much more is that likely to be than their current team!?!), it would be illegal. It’s called TAMPERING.
And yes, there are good young guys out there that the Cats should look at. There’s also talented veterans. I’m sure the Cats are looking at all of them, otherwise they’d have a new coach already. But most of these guys can’t be formally pursued until AFTER the season.