From Sporting News:

The Washington Wizards have acquired Nene from the Denver Nuggets in a three-way deal that sent Javale McGee to Denver and Nick Young to the Los Angeles Clippers, according to Yahoo! Sports.

The Washington Post, reporting that the trade was close, says the deal would also send Wizards forward Ronny Turiaf to Denver and Clippers forward Brian Cook and a draft pick to Washington.