Bell (finger) is listed as active Sunday at Chicago.
The 49ers will be without Garrett Celek as a result of a high ankle sprain, which will thrust Vance McDonald and Bell into more prominent roles in the passing attack. Coming off a three-catch, 67-yard performance last Sunday against the Cardinals, Bell will look to keep it up against a Bears defense that has yielded 26 receptions to tight ends over the last four games.