Rafael Benitez has told Jonjo Shelvey he must control his anger if he wants to fulfil his potential.
It was revealed on Monday, a day after the 25-year-old Newcastle midfielder had been sent off for standing on Tottenham counterpart Dele Alli, that he has been seeing a psychologist to help him deal with his issues on the pitch.
Manager Benitez was at pains not to criticise his player in public at his prematch news conference on Friday afternoon, but admitted only Shelvey, who served a five-match ban last season for racially abusing Wolves player Romain Saiss, could address the problem.