For Chris, or someone more knowledgeable than I, on traded-player exceptions and the cap.
One problem with acquiring Rudy Fernandez is the lack of matching salary. By my calculations his $1,246,680 requires at least ($1,246,680/1.25)-100,000 = $897,344 to match. That could be in the form of a traded player exception, but the Celtics have no such exception. Both Dallas and Utah have multiple traded-player exceptions including one in the neighborhood of $1M which will expire within 6 months. Can you trade a player for more than his actual salary in traded-player-exception money? If so could we trade Lafayette and his $762,195 salary for an exception of $900K, and then use that exception to acquire Rudy? Obviously we would have to compensate Dallas/Utah with cash or a pick but perhaps not too much since they have multiple exceptions and this one would be one of their smallest and due to expire in 6 months so perhaps not too valuable to them. We would also have to compensate Portland for giving up Rudy but that part is a reasonable negotiation. The general question is about traded player exceptions and whether using them in trades is limited to exactly matching the salary?