The move means the No. 1 overall pick in last year's draft will not be ready for the start of training camp this weekend. But Clowney will be able to return to practice whenever he is ready.
Clowney played just four games as a rookie last season before having season-ending microfracture surgery in December. Monday's move isn't a surprise. The Texans have said they weren't sure if he would be ready for the start of training camp, but they still hope that he will be healthy in time for the season opener.