Hughes isn't coming to the Kings.
My guess he'll re-sign with the Wizards, but I could see him jumping ship to the Cavs. Either way, the Kings don't have enough cash (the MLE won't do it) or tradable pieces that Washington wants.
Something else to keep in mind. After Allen, Redd and Hughes there's a dropoff in talent, but the next best FA shooting guard IS Mobley. There won't be an upgrade this summer. Bobby Simmons is nice, but I'm not sure Martin or Garcia can't be better in short order. Besides, I think Simmons ends up back in LA.
Petrie needs to be focused on a big man which is a bigger need IMO. Nene and Reef would be a great summer haul. Pierce for Peja and Tag's expiring contract would be extrodinary.