I agree he'll probably make them worse if he's their starting 5.
Rondo
Cook, Daniels
James, Green, KCP
Kuzma, Davis, Cousins, McGee, Dudley
They'll probably need to trade Kuzma and filler for another ball-handler. Only LeBron James and a shaky Rondo. Might be hoping Cook grows into that role - never really had a chance in his NBA career.