Trumaine Johnson

Anyone have the 411 on this guy.
Maybe worth a look???
He's probably out of the Steelers usual price range for free agents, but he is young, a known talent, tough tackler and could be the guy here for a long time to come.
With Heath's money available, would the Steelers take that rare FA leap on a guy like this rather then a draft unknown??? He's probably Steelers pipe dream-ish, but maybe positioned just right to get a serious look from us.
Thoughts???