In November, the University of Houston landed two of the top high school basketball players in the nation when 6-6 guard/forward Danuel House, from Hightower High School, and 6-10 forward Danrad "Chicken" Knowles, from the Homeschool Christian Youth Association, signed with the Cougars.
Only House will play for UH this coming season.
Cougars head coach James Dickey announced on Friday Knowles will sit out the 2012-13 season.
"We look forward to Danrad joining our program for the 2013-14 season when we enter the Big East Conference," Dickey said in a statement released by the school.
UH said Knowles will have four years of eligibility remaining with the start of next season.
The school, citing federal privacy student laws, did not release any details and said Dickey and the Houston administration will have no further comment.
Knowles is part of the Cougars five-man recruiting class that was ranked among the nation's top 25 by a variety of national recruiting services.
Last year, ESPNU rated Knowles as the 15th-best power forward in the nation and rivals.com ranked him as the 47th-best player in the country.
Knowles said in November, when he signed with UH, he had chosen the Cougars over Baylor, Arkansas and Missouri.