The NBA trade deadline is fast approaching and the Atlanta Hawks are looking to upgrade their roster and they have had some preliminary discussions with the Boston Celtics about Ray Allen or Kevin Garnnett, according to Yahoo's Adrian Wojnarowski.

The Celtics are looking to acquire Josh Smith and possibly other players, and Mitch Lawrence of the New York Daily News is reporting that the Celtics are trying to rebuild and are willing to give up Garnett in exchange for the Hawks' Smith and others to the Hawks:

With the Big Three's window now shut, Ainge is trying to land Atlanta's Josh Smith and other young studs, while offering up Kevin Garnett. Paul Pierce and Ray Allen can also be had, for young players and draft picks.

However, the Hawks do not want to give up Smith for Garnett's expiring contract and the Celtics do not want to give up Garnett for Marvin Williams or a similar player. Also to consider is that Garnett's contract is worth $21 millon while Smith's is at $13 million so the Hawks would need to get closer and match the $21 million if they want to pull this deal off.

For more news and notes on the Hawks, check out Peachtree Hoops.