Daly mostly played C for this team in terms of matchups, Cousins often times spent his minutes guarding a Josh Smith, Blake Griffin, etc and he was consistently the only big guarding the pick and roll which as I saw more and more of them together, I realized that could be a problem moving forward with that duo.
Chuck was brought in to fill in Daly's role. Chuck was brought in to defend the more mobile PF's on the perimeter where he would be included in pcik & rolls or iso face-up situations, was predicted as the starting PF next to Cuz well before training camp by Westy on Grants show, and during training camp both Petrie and Westy said they were extremely confident with the Chuck/Cuz pairing and were very pleased with adding him.