ESPN's Marc Stein is reporting that the Detroit Pistons have signed San Antonio Spurs restricted free agent Boban Marjanovich to a three-year, $21 million offer sheet.

Marjanovich, a 7-3 center, was a rookie last season for the Spurs after spending the first few years of his career in Russia and his homeland of Serbia.

The Spurs have three days to match the Pistons offer, but Stein says that they are unlikely to do so.

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