Uncertainty about Isaiah Thomas' hip after guard's physical in Cleveland

What do Cavs do next with Thomas? (0:59)

Adrian Wojnarowski breaks down the possible action that Cleveland could take with Isaiah Thomas and the Celtics depending on Thomas' medical evaluation. (0:59)

After All-Star guard Isaiah Thomas underwent a physical examination in Cleveland on Friday, uncertainty over the fitness of his injured hip has Cavaliers officials evaluating the results and considering possible ramifications to the blockbuster trade that sent Kyrie Irving to the Boston Celtics earlier this week, league sources said.

One source involved in the process said on Friday night, "It's a very sensitive situation." And, as of Saturday morning, team sources told ESPN that Cleveland had not re-engaged Boston to address any issues about the trade.

Thomas left town Friday after taking the exam.

The Cavaliers still are evaluating the medical information, and no final decision has been made, league sources said.

On Tuesday, the Celtics traded Thomas, Jae Crowder, Ante Zizic and the Brooklyn Nets' 2018 first-round pick to Cleveland in exchange for Irving.

In the deal, Cleveland has placed the most value on the 2018 unprotected first-round pick that Boston controls from the Nets, league sources said. Instead of voiding the deal, Cleveland could potentially push for Boston to sweeten it -- namely for another draft pick. For now, those are conversations still potentially to be had.

Irving is scheduled to take his physical with the Celtics on Saturday, league sources said.

Thomas has been rehabilitating a hip injury that ended his season in the Eastern Conference finals. Boston doctors had decided that Thomas' hip did not require surgery and prescribed a summer regimen of rehabilitation and rest. In the rehab process, Thomas still hasn't started running, league sources said.

When asked Tuesday if Thomas' injury played a part in making the trade for Irving, Boston general manager Danny Ainge told reporters, "Some."