http://www.cubuffs.com/SportSelect.dbml?DB_OEM_ID=600&SPID=255&SPSID=3843 Paul Richardson has embarked on an intensified five-week rehab regimen that could return the sophomore receiver to the Colorado lineup before the Buffs get deep into Pac-12 Conference play. The operative word remains "could." As was the case when he began his recovery from ACL surgery on his left knee in mid-April, there still are no guarantees he will play in the 2012 season. But at the end of his five-week program - on or about Sept. 16 - Richardson will be reevaluated. That date will mark five months since his ACL surgery, an operation which historically can require six to nine months or longer for full recovery.