Vonleh previously played for the Chinese Basketball Association team during the 2021/22 season before returning to the NBA with the Celtics last summer. He appeared in 23 games for Boston, averaging 1.1 points and 2.1 rebounds in 7.4 minutes per night. He was traded to the Spurs in early January before his contract became guaranteed, and San Antonio immediately waived him.
Vonleh was taken by Charlotte with the ninth pick in the 2014 draft, but other than three seasons in Portland, he never spent more than a year with any of his eight NBA teams.
Panathinaikos in Greece reportedly considered signing Vonleh in July, but he opted to return to Shanghai instead.
Ferrell has been out of the NBA since finishing the 2020/21 season with the Clippers. The 30-year-old guard played briefly with Panathinaikos, then moved on to Cedevita Olimpija, where he was named MVP of the Slovenian Basketball League Finals last season.
Ferrell played for five teams during his five NBA seasons.