O'Brien has been returned to the minors, Tom Gulitti of The Record reports.

EDGE Analysis

O'Brien was a first-round (27th overall) draft selection in 2007, but the 26-year-old hasn't been able to hang onto a stable role in the NHL. In 67 career games at that level, he's produced just eight goals and four assists -- that makes him little more than organizational depth at this juncture.