The Stoke City goalie spent time on loan under Karanka at the Riverside Stadium.
Events at Middlesbrough this week have certainly taken a turn for the worse.
Last Friday it emerged that Aitor Karanka had stormed out of a team meeting on Friday and it was rumoured his days at Boro might be numbered.
He went on to miss the Sunday tie with Charlton Athletic, a game Boro lost 2-0.
But he has now returned to full training with the club and has made it clear he never wanted to leave Boro.
It was a complex and confusing situation which has clearly had a serious impact on the club's promotion hunt.
One man who knows Karanka and the club has now been speaking about the recent events.
"They've come to the conclusion that everything is back rosy in the camp. Obviously something happened between the manager and the players that he wasn't overly agreeing on.
"I know he made some big signings like Stewart Downing, (Jordan) Rhodes as well from Blackburn. They were on the bench for a few weeks.
"I don't know if there was some sort of altercation within that meeting (last Friday).
"Aitor's a hugely respected coach. I have great admiration for the job he'd done whilst I was there and the job he's still doing."
He seems to feel a clash between Karanka and the players is the only logical explanation for the recent unrest.
With that in mind it is going to be interesting to see just who does feature for Boro going into their next game with promotion rivals Hull City on Friday.
It is a massive game for the club and Boro fans will be hoping that the problems at the club can be put aside for the game, with defeat a potentially knockout blow in their hopes at Premier League football next season.