McCain, 27, is coming off the worst season of his career. He was toasted by Eddie Royal in the 2013 season opener and continued to struggle the rest of the way.
At 5-foot-9 and less than 190 pounds, he's purely a slot corner and special teamer.
Adding McCain to go with Ike Taylor, Cortez Allen and William Gay shouldn't change the Steelers' draft plans. Cornerback and a big, physical wide receiver are perhaps the Steelers' top needs entering the 2014 NFL Draft.
Dale Lolley of the Washington Observer-Reporter recently wrote that the Steelers will address one of those two positions in the first round, with the top targets being Michigan State cornerback Darqueze Dennard, Oklahoma State cornerback Justin Gilbert, Texas A&M wide receiver Mike Evans and Florida State wide receiver Kelvin Benjamin, "pretty much in that order."
In the latest edition of the "Around The League Podcast" the guys do the news, open the mailbag and play "Win Wess' Toaster."