Blake, 25, was a member of what can only be described as a Patriots 2011-esque pass defense over in Pittsburgh. Although he was a starter, logging 19 games with the Steelers and flashing at times (he logged his first pick-six with a 70 yard return against the San Diego Chargers in Week 5), he isn't the kind of player that instills any confidence in anybody. In fact, Blake finished his 2015 campaign with the second-lowest cornerback rating in the league - ahead of only Brandon Browner (who was just released by the Saints). He's a durable player, but short at 5'9", and at this point Blake is likely little more than a backup who can perhaps provide some emergency depth and maybe some special teams value.
Of course, now that I've said that, look for the Patriots to offer him a three year, $15 million contract.