The Dallas Mavericks have agreed in principle with Houston Rockets VP of basketball operations Gersson Rosas to become the franchise's general manager, league sources told Yahoo! Sports.

For Mavs owner Mark Cuban and president Donnie Nelson, the hiring of Rosas is a coup for an organization that has been committed to finding a way to strengthen its basketball operations. Rosas will be given significant latitude to shape the direction of the franchise's pro and college personnel departments, free agency and scouting.
As an integral part of rebuilding the Rockets' roster with Houston general manager Daryl Morey, Rosas, 35, is considered one of the NBA's best young executives.
Over nine years with the Rockets, Rosas advanced steadily through the organization, beginning as a video coordinator and scout, and rising to executive vice president of basketball operations. With Rosas as general manager of Houston's D-League affiliate, the Rio Grande Valley Vipers, the team won two championships and reached a third league finals.
Rosas is a native of Bogota, Columbia, and has a coaching history at the University of Houston and with the Venezuelan national team.
The Rockets' front office has become fertile ground for rival franchises to hire executives. Rosas is the second member of the Rockets' front office to leave for a GM promotion this year. Sam Hinkie became the Philadelphia 76ers' general manager in May.
Donnie Nelson will be only the team president for now
I posted it in the off-season thread ,but I think this deserves its own thread