IRVING, Texas -- With two roster spots open the Cowboys will sign fullback Jamize Olawale and defensive lineman Ben Bass, who attended the team’s rookie minicamp following the draft on a tryout basis.

Olawale was a wide receiver at North Texas and was moved to fullback by the Cowboys entering the camp. He displayed an ability to catch the ball out of the backfield and good feet as a ball carrier in limited touches.

Bass, a Plano native, played at Texas A&M, where he saw limited action. At 6-5, 295 pounds, he has good size for a defensive end.

The Cowboys have 90 players on the roster, including their seven unsigned draft picks. The team is hoping to sign their picks by mid-June after waiting nearly until the week before training camp to talk to the players’ agents in past years.

Rookies are back at Valley Ranch to take part in the offseason conditioning program with the veterans. On Tuesday and Thursday, the Cowboys will continue their on-field teaching sessions with the coaches. Safety Matt Johnson, a fourth-round pick, is not allowed to attend until Eastern Washington is out of school.

First-round pick Morris Claiborne (wrist) and fourth rounder Kyle Wilber (finger) will be able to rehab full-time with the Cowboys’ athletic training staff.