Dragos appeared in the first six games of the season for the Bears playing mainly on special teams and was inactive against Cleveland and Green Bay.
The 6-2, 245 pounder out of Boston College was claimed off waivers in 1999 and had four receptions for 28 yards in his only full season in Chicago.
McMillon has been a member of the Bears' practice squad since the beginning of the season after playing on special teams the final three games of 2000 for the Bears.
The 5-10, 183 pounder out of Northern Arizona played for the Frankfurt Galaxy in NFL Europe this past offseason.
Young was originally signed to the Bears practice squad on Sept. 9 and released Oct. 13.