Harbor sustained a calf injury during Monday's practice at Bartram Trail High School and had his lower left leg in a protective boot on Wednesday. He and starter Marcedes Lewis are the only tight ends on the roster that have caught a pass in an NFL game. The other three tight ends are either undrafted rookies or first-year players.
Harbor caught 24 passes for 292 yards and two touchdowns last season and has 71 catches in his career as a flex tight end. Coach Gus Bradley said he and general manager David Caldwell have not yet discussed trying to find and add a veteran tight end.
Harbor's absence will mean more reps for undrafted rookies D.J. Tialavea, Reggie Jordan and Marcel Jensen, as well as first-year player Brandon Barden, who played in three games for Tennessee in 2012.
"Those guys will get some opportunities," Bradley said. "I think the H-spot is really what we're looking at. That’s where Clay played, so that would be the spot that we need to discuss."