The excellent Mark Deeks of Shamsports.com (which should be your go-to source for player salaries if it isn't already) is reporting that the Sacramento Kings will sign forward/center Chris Johnson tomorrow.
Johnson is a 28 year old shot blocking big man who most recently played in China. He has played sparingly in the NBA for the Trailblazers, Celtics, Hornets and Timberwolves. He has career averages of 2.9 points, 1.9 rebounds and 0.6 blocks a game. In other words, he's not a game changer.
Most likely the Kings will try him out to see what a true shotblocker looks like next to DeMarcus Cousins. The deal is most likely a 10-day deal, much like the contracts of Orlando Johnson (now gone from the team) and Royce White (on his 2nd 10-day deal).
Johnson last got decent time playing for the Timberwolves, where he put up decent numbers in limited minutes. His advanced stats show someone who can make shots efficiently and block them. He's not a great rebounder for a big man though, at least on the defensive end (he's above average on the offensive glass).
Johnson's signing would put the Kings roster at 15. No word on what this means for Royce White, another big man the Kings have given a tryout but who has yet to meaningful action on the court.