No they don't. They've got "control" but that control is only the ability to tender him a contract. Give them a team option, something that the Cubs could use, that would pay him handsomely, assuming rehab works. Right now, the Cubs can tender him a contract, but they won't. That would guarantee him a heck of a lot more than they'd be willing to pay a rehabber, something around $3m. So, you give him a contract guaranteed a lot less for 2008. Let's say it's a $750,000 deal. But, you include an incentive that pays him another $500,000 if he appears in a major league game in 2008, and $2m if he starts 10 (or break it down as an incentive for number of starts). Then you throw in a $10m team option (the type of money he'd probably get if he was arb eligible and healthy) for 2009. Maybe include a player option at $2.5m that kicks in if he makes X amount of starts in 2008. That big team option shows Prior you are committed to his rehab, and is a carrot. It's also protection for the Cubs, if he rehabs quicker than thought, and ends up tearing it up for the 2nd half of 2008 and appears on the verge of making much more. The thing is, the Cubs won't want to tender him a contract, thus losing his control. So, if they want to keep him, they'll have to sign him before the tender deadline. And in order to do that, you have to give Prior a reason to sign. If he's pissed at the Cubs, he can just play hardball, dare them to tender the contract, and when they don't, become a free agent.