Middlesbrough head coach Aitor Karanka has reportedly been involved in a training ground row, leaving his position at the club in doubt.
The North-East outfit currently sit in the automatic promotion places in the Championship, but they have won just three of their last 10 fixtures.
Despite the club challenging for a spot in the Premier League, BBC Sport and PA have reported that the Spaniard stormed out of a meeting at the training ground ahead of their clash with Charlton Athletic on Sunday.
Karanka has been in the dugout at the Riverside Stadium since November 2013, winning 67 of his 128 matches in charge.
