So far this offseason, the Sacramento Kings have only re-signed one of their own free agents: Omri Casspi. Andre Miller went on to sign with the Minnesota Timberwolves, Derrick Williams fooled the Knicks into thinking he was Deron Williams (still the only reason I can fathom he got a $5 million a year contract), and Reggie Evans and Ryan Hollins remain unsigned. In Ryan Hollins' case, it appears the Kings still have some interest there. According to Yahoo!'s Marc Spears, the Kings are one of three teams pursuing Hollins.
Hollins played sparingly for Sacramento last year, often filling in when someone else in the rotation was injured. He probably wouldn't be looking at much more time this year given that the Kings have acquired guys like Kosta Koufos, Quincy Acy and Willie Cauley-Stein. If Hollins is looking for playing time, Sacramento's probably not his ideal choice.
Another point against Hollins coming back is the fact that Sacramento already has 14 guaranteed contracts on the roster. While that still leaves one open spot on the roster, most teams typically like leaving it open for future flexibility in case of injury or for development purposes (like if Vince Hunter proves to be a guy they want to keep or call up from the D-League).
In Hollins favor is that he's a good teammate, fits Karl's system well since he can run the floor, finish efficiently and protect the rim. Sacramento could do much worse than bringing him back.