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 pre-match press 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.