Source: Olsen at voluntary workout

CHICAGO -- Chicago Bears tight end Greg Olsen was present at Monday's voluntary workout at Halas Hall, according to a source familiar with the situation, a sign that Olsen has gotten over his initial concerns about playing in a Mike Martz offense.

Olsen, who also showed up at the facility to work out last week, is said to already have a decent grasp on some of the new offensive philosophies Martz is expected to employ. Multiple sources indicated Olsen was extremely upset this offseason when Martz was hired as offensive coordinator and was unsure about his future in Chicago. However, these recent developments only strengthen the notion Olsen is committed to playing for the Bears in 2010.

Acccording to the source, other notables in attendance at Monday's workout, which consisted mainly of lifting weights, were Jay Cutler, Julius Peppers and center Olin Kreutz, who is rehabbing from offseason surgery.

Coach Lovie Smith was the only coach at the workout.

Jeff Dickerson covers the Bears for ESPNChicago.com.