When will Markus Wheaton's role expand?

Back in early September, just as the NFL season was getting underway, we discussed how rookie third-rounder Markus Wheaton was going to have a difficult time working his way into the rotation as a Pittsburgh Steelers pass-catcher this season. With Antonio Brown and Emmanuel Sanders atop the WR depth chart, Wheatons' only shot was to unseat the veteran Jerricho Cotchery.