Aitor Karanka has taunted opposite number Pep Guardiola by claiming he is not even the best boss in Manchester - and says he must win the Premier League before he can be compared to Jose Mourinho.
Middlesbrough entertain Guardiola’s Manchester City in the FA Cup quarter-final Saturday lunchtime and it appears there is no love lost between the managers.
Karanka won the Champions League three times as a player with Real Madrid - and was later assistant to Mourinho at the Bernabeu - and is a long-time adversary of Barcelona legend Guardiola.
And the Boro boss said: 'Guardiola is not the best coach in the world - the best coach in the world is Jose Mourinho.