Andrew Luck is seeking more opinions to figure out why his surgically repaired shoulder is "not progressing as expected," according to an Indianapolis Colts source.

Luck had what the team believed was a mild setback more than two weeks ago, when he experienced soreness in his throwing shoulder after he was cleared to practice. He received a cortisone injection, only to experience another setback, which the team does not believe is serious, a source said.

The quarterback had surgery to repair a torn labrum on Jan. 15 and the recovery has not gone as expected.