A source said the Mavs had a second round of talks with Sessions' agent and that the Rockets are now in play for the 6-foot-3 guard seeking a starting job and the security of a multiyear deal.
Dallas failed to bring Deron Williams into the fold in the first week of free agency and watched Plan B, Steve Nash, go to the Los Angeles Lakers in a trade. On Thursday, Jason Kidd decided not to re-sign with the Mavs after coming close to a three-year agreement and instead chose to head to the New York Knicks, leaving Dallas with the vacancy in their starting lineup.
The Rockets lost Goran Dragic in free agency to Phoenix and then traded Kyle Lowry to the Toronto Raptors. Houston made a lucrative offer to Knicks restricted free agent Jeremy Lin, but the Knicks are expected to match.
Sessions, 26, was traded from Cleveland to the Los Angeles Lakers in March. He opted out of the final year of his contract that would have paid him $4.55 million next season.