We can sign-and-trade Scal, but there are two considerations:
1. Scal's deal would have to be fully guaranteed for at least one season, for a player Denver probably wouldn't have much interest in; and
2. If we gave Scal more than a 20% raise, he would become a "base year compensation" player, making his contract very difficult to trade.
But yes, theoretically, we could package Scal in a sign-and-trade.