Looks like Washington is scouring the market for Trevor Booker replacements as well. Per Gary Washburn of the Boston Globe:
Humphries made a name for himself in the basketball world with his rugged play in the paint for the then rebuilding Nets four years ago. He averaged a double-double in both seasons in New Jersey, and made the move over to Brooklyn on a two year deal worth $24 million dollars. But he struggled in the first year of his deal and was later told by interim head coach P.J. Carlesimo that he'd be left out of the rotation in favor of Mirza Teletovic and Reggie Evans. He was shipped off the Boston that summer in the Paul Pierce/Kevin Garnett trade.
He reinvented himself in Boston as a high-energy big man that gobbles up rebounds. He led the Celtics in rebounding rate and in player efficiency rating last season, but more surprisingly, shot a scorching 45 percent from midrange. Over 55 percent of his offense came on jump shots from that area per NBA.com's stats page, which became a major boon and a reliable safety valve for Rajon Rondo as he made his way back from an ACL tear.
What makes him so reliable throughout the years is his willingness to play both the four and the five position. He's undersized at 6'9", but he's extremely physical and does as good a job as any in carving out rebounding position. He's an underrated defender that uses his athleticism to contest shots, but you do have to hide him in pick and roll coverages by keeping him in the lane. He doesn't have the quickness to contain ball handlers and is often slow to recover.
And he is a bit of a wild card in free agency. His best years were in New Jersey for a piss-poor Nets team, and when he finally cashed in with his two-year deal, his play stumbled. Luckily for Washington, they can get him on a reasonable deal and use him off the bench as their third big.