QB Jay Cutler gets loose at the start of practice.

QB Jay Cutler targets a wide receiver during drills while TE Martellus Bennett looks on.

WR Joe Anderson catches a pass from QB Josh McCown.

Offensive Coordinator Aaron Kromer works with newly acquired guard Matt Slauson during the Bears' first practice of the season.

QB Jay Cutler under center during Tuesday's practice at Halas Hall.

Head Coach Marc Trestman examines the offense during minicamp drills at Halas Hall Tuesday.

Matt Forte catches passes from RB coach Skip Peete during minicamp drills at Halas Hall.

Newly acquired Bears TE Martellus Bennett during minicamp practice.

Michael Bush catches passes from RB coach Skip Peete during minicamp drills at Halas Hall.

Bears LT Jermon Bushrod during minicamp drills inside the Walter Payton Center at Halas Hall.

CB Charles Tillman takes part in the voluntary minicamp at Halas Hall Tuesday.

Marc Trestman runs his first practice as Head coach of the Bears during Tuesday's voluntary minicamp at Halas Hall's Walter Payton Center.

New Bears LB D.J. Williams takes part in Tuesday's voluntary minicamp at Halas Hall's Walter Payton Center.

Head Coach Marc Trestman works with QB Jay Cutler during Tuesday's voluntary minicamp at Halas Hall.