Jadeveon Clowney has been placed on the physically unable to perform list by the Houston Texans.

Clowney will begin training camp on the list and still count against the Texans' active roster. The move allows them to keep Clowney on the PUP list into the regular season if necessary, but he can come off at any time during training camp.

Clowney had microfracture surgery on that right knee Dec. 8, a procedure in which tiny fractures are made into the bones around the knee to improve blood flow to the meniscus, the cartilage that pads the knee joint.

Clowney was the first overall pick in the 2014 NFL Draft.