Howard has battled knee injuries the past two seasons but that will not stop teams from expressing interest in him.
According to the Washington Post, the Celtics are one of the several teams who have expressed interest in Howard.
Howard is 31 years old and would not be an expensive option for the Celtics to improve their team. After seeing his former team the Dallas Mavericks win the NBA Finals last season, Howard may be motivated to sign with a contender to win his first championship.
For the Celtics, this move is a no-brainer. When healthy, Howard is a double-digit scorer and someone who can give Boston a boost in rebounding.
The Celtics were a terrible rebounding team at times last season, especially against the Miami Heat in the playoffs, and they need forwards who can help out on the boards because of the team's lack of depth at center.
Boston head coach Doc Rivers will be looking for ways to give aging stars Kevin Garnett, Paul Pierce and Ray Allen plenty of rest this season, even if that means costing the team some wins.
Let's face it, the Celtics will be in the playoffs, but being the No. 1 seed is an unrealistic goal. The way that Boston can make the deepest playoff run is not to be a high seed, but to have everyone in good health.
Adding Howard would give the Celtics a versatile player who can fill in for either of the "Big Three" at both forward positions and shooting guard.
With good talent around him, Howard would excel with the Celtics and be a key part of their bench, which still needs more talent.
The Celtics will not be major players in free agency, but making a small signing for a player like Howard could be quite beneficial to a team that could use his all-around skill set.