"We knew he had an injury coming in to camp because he hurt it during the lockout," Ramasar told ESPNLosAngeles.com. "Cleveland was aware of it as well. After he took a physical, we had their doctors look at it and now we're getting a second opinion."
Ramasar would not offer further details on how Davis hurt his back. Davis was able to continue working out and playing after he was injured, although he appeared to be moving gingerly during a charity game he hosted in Los Angeles on Nov. 27.
"We want him to see as many specialists as possible," Cavaliers GM Chris Grant said. "We're very supportive of it because there are a lot of good doctors out there. We're supportive of him getting healthy."
Davis, 32, participated in just the first day of the Cavaliers' training camp. It was assumed he was sitting out as the team pondered whether to use the amnesty provision of the new collective bargaining agreement on the remaining two years and $28 million on his contract.
Ramasar said that's not the case.
"They're a first-class organization," Ramasar said of the Cavaliers. "Baron was planning on rejoining the team and proving support to a team with young exciting personnel."
The deadline for teams to exercise the "amnesty clause" is Friday. Grant said a player's physical situation would not affect that decision.
"Those kinds of decisions aren't necessarily based on health," he said. "I don't think Baron's going to be out long term, but he has some stuff we're going to deal with moving forward."
The 32-year-old Davis battled back and knee injuries after being acquired from the Los Angeles Clippers last season.
"We all got something as we get older," Cleveland coach Byron Scott said. "He was doing great this summer from all the reports that I heard. His back got a little sore and then he came here and it kind of flared up again. I'm not discounting him at all, but right now we've got to go with what we've got."
Ramona Shelburne is a reporter and columnist for ESPNLosAngeles.com. Information from The Associated Press was used in this report.