Philadelphia 76ers center Jahlil Okafor, who was previously cleared to resume on-court basketball activity following his arthroscopic knee surgery in March, will be limited in his participation with the USA Men's Select Team to non-contact activity and drills.The 76ers made the announcement Monday before the 20-year-old Okafor trains with the USA Basketball Men's National Team this week in Las Vegas."While the Sixers' medical and sports science team feel Jahlil is fully healed, due to the workload associated with full-contact basketball, it was deemed appropriate to limit his participation to non-contact activities and drills for the upcoming USA Basketball minicamp," the Sixers said in a press release.The team said Okafor's recovery and return to play are on schedule. He has been continuing his rehabilitation and performing limited basketball activities while taking classes this offseason at Duke University. He then resumed this practice regiment since joining Sixers coaches and staff last week in Las Vegas."Jahlil has been in the gym working hard and has made great strides in his recovery and return to action, but he's simply not in the kind of basketball condition required to compete at this level of competition," Sixers president of basketball operations Bryan Colangelo said in a statement. "Our sports science and medical team feels that holding him out of scrimmage situations is in everyone's best interest at this point of the summer."The 6-foot-11, 275-pound Okafor averaged 17.5 points and 7.0 rebounds in 53 games last season.