Wieskamp, 23, is 6-foot-6 and was waived by the Spurs midway through October. He worked out for the Lakers in November.
He appeared in 29 games last season, averaging 2.1 points, after the Spurs selected him with the No. 41 overall pick of the 2021 NBA Draft.
He actually spent most of last season on a two-way deal, but signed a standard deal in March. He then missed summer league with an ankle sprain, and his future in San Antonio was starting to seem in doubt.
He then signed a deal with the Spurs in late August, a contract that Wojnarowski reported was for two-years and $4.4 million.