A person familiar with the deal says center Ian Mahinmi has agreed to sign with the Washington Wizards for $64 million over four years.

The person spoke to The Associated Press on Saturday on condition of anonymity because NBA free agents are not allowed to sign contracts until Thursday.

Mahinmi's Twitter account had a message directed at the Wizards' account, saying: ''let's goooo.''

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The Washington Post first reported the terms of the contract.

Mahinmi is a 6-foot-11, 250-pound center who averaged career highs of 9.3 points, 7.1 rebounds, 1.5 assists and about 25 minutes in 71 games, all starts, for the Indiana Pacers last season.

The 29-year-old Mahinmi, who is from France, was drafted in the first round by the San Antonio Spurs in 2005 and made his NBA debut in the 2007-08 season. For his career, he has averaged 5.1 points and 4.3 rebounds in less than 17 minutes.