In addition to his comments on potential player movement, John Dorsey also addressed a couple of key player injuries for both Justin Houston and Tamba Hali while speaking at the 2016 NFL Combine.
#Chiefs GM John Dorsey said Justin Houston and Tamba Hali both underwent recent procedures to clean up their injuries.— Terez A. Paylor (@TerezPaylor) February 25, 2016
Houston missed the final five games of the regular season due to the knee injury before coming back to make appearances in both of the Chiefs playoff games, but he was clearly not the same player. No timeline was given by Dorsey on either player's recovery but the "clean up" nature of the procedure makes it clear that neither is expected to miss much time.
Whether or not Houston is back for OTAs is not the primary concern. Rather, the team is likely happy for Houston to rest and rehab and do what it takes to return to form. Like any team losing their best defensive player, the pass rush suffered with Houston on the sidelines. Having Houston fully healthy will also help the team absorb any free agent losses this offseason.
Houston had 25 tackles, 7.5 sacks and 2 interceptions in 11 starts for the Chiefs last season.