MLB: Halladay trade: Why would Happ/Blanton take phisicals and not Lee?

The Phillies Joe Blanton and J Happ have taken physicals along with prospect donald brown. While they took physicals today Cliff Lee agent said he hadnt heard anything other then rumors. Dose this mean it is possible Lee is not involved in the trade?
Update: reports now saying philly may be reciving a reliever in the deal.
3 answers 3