I watched a fair bit, games in the championship when we were originally linked a couple of years ago and the acid test in PL last season, despite Boro being relegated they were actually weren't bad at the back unluky in many games with late equalisers etc after being under the kosh for 90 mins, it was scoring goals that were there problem and he was the lynch pin, good scoring threat, can play out from the back, is a unit, a solidifying force, a leader and those rarest of things a left sided centre back, he can also play in a 3. Will be an England cap eventually in my opinion.