A two-year starter for the Bearcats, Holly registered 45 tackles, two interceptions, eight pass breakups and one blocked extra point attempt last season as a senior.
Edwards spent three years with the Bears, staring 24 of 32 games played. He started 16 games at left guard in 2003, but became a spot starter last year with six games at right guard and two at left.
Pippens looked to have earned a roster spot before having a poor performance in the preseason finale. On successive plays against the Browns, he was flagged for an illegal use of hands penalty and then beaten deep for a 48-yard completion.
The Bears signed five players that were recently cut to the eight-man practice squad. LB Jeremy Cain, DT Antonio Garay, T Rob Droege, OL Anthony Oakley and FB Keith Belton. Cornerback Roderick Babers and DT Jason Jefferson were also added to the squad.
Babers was a fourth round pick by the New York Giants in 2003, but has bounced around the league over the past three seasons. He spent time with both Tampa Bay and Denver in training camp.
The Bears still have one spot open on the practice squad.