They let key free agents like Tyson Chandler, JJ Barea, Corey Brewer and DeShawn Stevenson go in order to free up money for the summer.
While Dwight Howard likely won't be coming to Dallas next season unless it is through a trade, the Mavs remain in contention for the services of Williams.
Williams has yet to sign an extension with the New Jersey Nets, though he has expressed interest in staying with the team.
However, the Mavericks have a star in Dirk Nowitzki who would be someone Williams would probably love to play with. They also have ample cap space this offseason, giving them the ability to offer him a max contract.
They also have a bold owner in Mark Cuban, who isn't afraid of making moves to improve his team.
Despite getting swept out of the playoffs this season by the Oklahoma City Thunder, the Mavs still have a talented team that could easily contend for a championship with Williams on the roster.
Williams is a superstar point guard with an elite combination of quickness and strength, which allows him to blow by bigger guards and overpower smaller ones.
His outside shooting ability makes him even more difficult to guard. He is also a terrific floor general, possessing the ability to consistently make plays for himself and his teammates.
The Mavs also have a strong supporting cast around Nowitzki with players like the versatile Shawn Marion, future hall-of-fame point guard Jason Kidd, shot-blocking center Brendan Haywood, and sixth man Jason Terry who provides instant offense off the bench.
Nowitzki looked unstoppable at times during the Mavs' 2011 Finals run with Jason Kidd, who is solid but no longer elite, as his point guard. Imagine what he could do with Williams running the offense.
The Mavs would have one of the best guard-big man combos in the league, and would be lethal on the pick-and-roll with Williams' and Nowitzki's outside shooting and penetration abilities.
The bottom line is that the Mavericks are the best team that Williams could sign with right now.
No other team can offer the depth and championship experience that Dallas can (as well as the finances to offer him a max-contract). If Williams wants a ring, Dallas is the place to go.