Lamar Odom suffered a back injury after just two games in Spain with Baskonia.
Odom's personal doctors have ruled him unfit to play for two months, ending his season.
After a long layoff, Odom signed a two-month deal with Baskonia on Feb. 18.
"Lamar Odom as an athlete, he is a little embarrassed," Odom said. "But, at the same time, I am proud to be able to say that I am hurt and that I have a team that understands that I am injured and they are still supportive. That means a lot."
Baskonia said it would "leave the door open" to re-signing Odom when he recovers.