"We are excited to keep these three up-and-coming players as part of our core for another season," Bobcats vice president of basketball operations Rod Higgins said Thursday in a statement. "We have been very pleased with their development over their careers so far and look forward to seeing them continue to grow both in the season that is just starting and in 2014-15."
Biyombo's strength is shot-blocking. The seventh overall pick in the 2011 draft, Biyombo ranks third on the team's career blocks list with 258.
Last season, he led the Bobcats in scoring (17.7), assists (5.7) and steals (2.0). Walker set a franchise season record for steals with 160.