Getty The Phoenix Suns ruled out center Mark Williams for Game 4 against the Oklahoma City Thunder. The Chicago Bulls could be looking to add depth to their frontcourt through offseason deals. One of their targets could be a promising center from the Phoenix Suns .  According to NBA reporter Evan Sidery, the Bulls are linked to a possible sign-and-trade for center Mark Williams , if the Suns decide to part ways with the 24-year-old big.  The Suns are reportedly open to bringing Williams back