It sounds like the Celtics have at least kicked the tires on Josh Howard (who was traded to the Wizards last season and promptly was injured for the rest of the year.
Per Marc Spears - Yahoo! Sports
The Boston Celtics and Chicago Bulls have shown "serious interest" in free-agent forward Josh Howard, a league source told Yahoo! Sports. While the Bulls could have the salary-cap space to sign Howard, depending on what happens with their offer sheet to J.J. Redick, the Celtics would need a sign-and-trade to arrange a deal because they have already used their midlevel exception on Jermaine O’Neal.
Some quick background info on Howard:
Green Street » Report: Celtics have ’serious interest’ in Howard
An All-Star with Dallas in 2007, Howard tore the ACL in his left knee as a member of the Wizards in March 2010. He was projected to out of action from six to eight months but told Yahoo! that he was ahead of schedule in his rehabilitation process and expects to be ready by the start of the regular season. Howard averaged 12.7 points and 3.6 rebounds in 26.2 minutes per game last season.
The Celtics have other interests as well...
Per Gary Washburn - The Boston Globe
Boston has reached out to former Toronto guard Antoine Wright, and former Minnesota swingman Damien Wilkins also could be a consideration.
In other news, Celtics fans hoping to trade for Leandro Barbosa will be disappointed to hear that he's going to be traded elsewhere.
Phoenix Suns close to acquiring Josh Childress, Hedo Turkoglu
The Suns are on the verge of acquiring forwards Hedo Turkoglu and Josh Childress, swiftly rebounding from the loss of Amar'e Stoudemire with two impact players. The Suns would send seven-year veteran guard Leandro Barbosa and late-season addition Dwayne Jones to Toronto for Turkoglu, a 6-foot-10 forward from Turkey with versatile skills to shoot from long range and be a playmaker. Toronto would then move Jones and its trade exception from the Chris Bosh sign-and-trade deal to Charlotte for former Suns forward Boris Diaw. Phoenix will send a 2012 second-round pick to Atlanta in a sign-and-trade deal for Childress, who will leave Greece for a five-year, $33 million contract to play for the Suns.
Thats a lot of wings changing teams that the Celtics won't get in on. There's still time and there are still guys out there, but there are fewer options every day.