The Detroit Pistons, sources said, are one of the prime options to take on Calderon, having pursued the Spanish floor leader all season. Sources told that the Grizzlies will acquire forward Ed Davis and veteran guard Jose Calderon from the Raptors and then move Calderon on to a third team to ultimately make this a three-team deal. The Memphis Grizzlies and Toronto Raptors have agreed in principle on a trade that will send leading scorer Rudy Gay to the Raptors, according to sources with knowledge of the deal.