Antonio Conte refused to speak about his bitter feud with rival Jose Mourinho ahead of Chelsea's visit to Manchester United.
Blues boss Conte has clashed numerous times with the United boss since arriving at Stamford Bridge in the summer of 2016.
Last month he called Mourinho a little man and also suggested he had amnesia.
Mourinho, meanwhile, inferred Conte behaved like a clown on the touchline, as well as alluding to his suspension for failing to report match-fixing in Italy, which Conte was later cleared of in court.
With Chelsea due at Old Trafford for a Premier League fixture on Sunday, Conte would not be drawn on questions about his relationship with former Blues boss Mourinho.