Kawhi Leonard’s right knee is now a major concern for the Los Angeles Clippers. The All-NBA forward sat out Los Angeles’ 119-111 Game 5 victory over the Utah Jazz on Wednesday night with what the Clippers are calling a sprain. A person with knowledge of the matter said Leonard will need more testing and evaluation, raising questions about his availability going forward. The structural integrity of Leonard’s knee has yet to be fully determined, the person said, speaking to The Associated Press on condition of anonymity because the team has not offered any specific diagnosis other than sprain. A sprain, by definition, is a ligament injury, though the Clippers have not said which of the four knee ligaments is the cause for concern. “He’s a little down because he wants to be here,” Clippers coach Tyronn Lue said before the game in Salt Lake City. “But that’s part of the …