Leonard helped lead the Aztecs to national prominence during his two seasons, including reaching the school's first Sweet 16 and finishing a program-best 34-3 in 2010-11.
Leonard is expected to be present as his No. 15 jersey is raised to the rafters at Viejas Arena. His LA Clippers play a home game that afternoon. Steve Fisher, who turned around the Aztecs program during his 18 seasons as coach, also will participate.
Leonard led San Diego State to a 20-0 start in 2010-11. The current Aztecs are two victories shy of matching that start.
He is one of only three players in the program's 99-year history to average a double-double for his career, with 14.1 points and 10.2 rebounds.
Leonard is in his first season with the Clippers. He was named NBA Finals MVP after leading the Toronto Raptors to their first title last season. He was named Finals MVP after helping the San Antonio Spurs win the championship in 2014.
The Associated Press contributed to this report.