These are my actual parting words:
Contracts don’t mean anything to CBS. They are not a safety net.
It’s a contract in the form of the actor saying that they will return for another season if the studios pay them such and such amount of money. From the studios standpoint it’s saying that they own said actor and can decide what they want to do with said actor depending on where the storyline, budget, and whatever else they feel like throwing out there.