Cowboys DE Spencer having microfracture surgery

IRVING, Texas – Dallas Cowboys defensive end Anthony Spencer is undergoing microfracture surgery on his left knee Tuesday, a process that includes stem-cell treatment designed to help promote cartilage growth.

The procedure – chosen after a variety of options were examined, agent Jordan Woy told – could optimally have Spencer healthy by February as the free agent-to-be seeks a new contract.

Spencer was a Pro Bowler last season, but played in just one game for Dallas this year before being placed on injured reserve last week. He’s making $10.6 million this season after being franchise tagged. The Cowboys have expressed an interest in finding a way to return him to the roster.