Mahinmi, 23, averaged 3.9 points and 2.0 rebounds in 26 games for the San Antonio Spurs last season. The French center played briefly in two games against the Mavericks in their first-round playoff series. According to the source, the deal is believed to be for the bi-annual exception of about $2 million per season. The second year is a team option.
The Mavericks signed center Brendan Haywood to a six-year deal last week and Erick Dampier's future with the team remains fluid. Dampier has a $13 million, non-guaranteed contract for next season. The Mavs hope to trade Dampier to land an impact player in return. If they don't trade him, they will cut him to avoid paying him the $13 million.
Either way, Dampier will become an unrestricted free agent and will be able to sign with the Mavs or any other team. It would be a stretch to think the raw, inexperienced Mahinmi would replace Dampier as the second-string center.
Mahinmi missed the 2008-09 season with an ankle injury and he spent much of the prior season in the NBA Development League.
Jeff Caplan covers the Mavericks for ESPNDallas.com. You can follow him on Twitter.