Burris made his NFL debut with Chicago in 2002, playing six games including a start in the season-finale.
Coleman participated in the final seven games of the season as a backup defensive back.
Warner spent most of his time on Chicago's practice squad in 2002 but ended the season as a gameday inactive for the final two contests.
All three players will suit-up for the two-time defending NFL Europe champion Berlin Thunder along with four other players from Chicago's reserve list: tight end Bryan Fletcher, wide receiver Elijah Thurmon, defensive end Roshaun Mathews and defensive tackle Curry Dawson.
The Thunder offense may take on a decidedly Chicago feel with Burris potentially taking snaps from Warner and throwing passes to second-year players Fletcher and Thurmon. On the defensive side, Matthews was the 2001 NFL Europe MVP and sack leader and is looking to re-establish himself as a dominant pass rusher after spending the entire 2002 season rehabbing a leg injury.
Wide receiver Edell Shepherd, running back Maurice Hicks and offensive lineman Jeff Grzeskowiak have been assigned to the Scottish Claymores. All three spent time on Chicago's reserve roster in 2002 with Shepherd and Grzeskowiak participating on the Bears practice squad while Hicks rehabbed a knee injury.
Guard Shane Grice and fullback Tyree Foreman have been assigned to the Barcelona Dragons while cornerback Teddy Gaines joins the Rhein Fire.
Training camp for all allocated NFL Europe players will begin with position players reporting to camp on Feb. 24 in Tampa, Fla. while all linemen report on March 2.