HOUSTON --A person with knowledge of the agreements says Kelvin Sampson and J.B. Bickerstaff will join Kevin McHale's coaching staff with the Houston Rockets. The person spoke on condition of anonymity Tuesday because no official announcement has been made by the team in the midst of the NBA lockout. McHale was hired June 1 to replace Rick Adelman, who parted ways with the team after four seasons. Sampson was also interviewed for the head coaching vacancy. He has been an assistant coach in Milwaukee since 2008, and formerly coached Oklahoma and Indiana. Bickerstaff, the son of former NBA coach Bernie Bickerstaff, has been an assistant in Minnesota the past four seasons. McHale coached the Timberwolves at the end of the 2008-09 and also worked in the team's front office.