(CBS) — With starting quarterback Jay Cutler expected to miss at least two weeks with a strained hamstring, the Bears have elevated quarterback David Fales from the practice squad to the 53-man roster.

The Bears also waived cornerback Bryce Callahanand signed cornerback Demontre Hurst and receiver Deonte Thompson to the practice squad. They terminated the practice squad contract of wide receiver Emughedi “Ify” Umodu.

The Bears drafted Fales in the sixth round of the 2014 NFL Draft.

Jimmy Clausen is expected to start for Chicago at Seattle on Sunday.