Maurizio Sarri has heaped further pressure on Mauricio Pochettino ahead of the pair's upcoming meeting in the semi-finals of the Carabao Cup.
Pochettino is deep into his fifth season at Tottenham and, despite helping to turn the club from Europa League regulars into a team who beat Real Madrid in the Champions League last season, has yet to win any silverware in north London.
Speaking ahead of Tuesday's semi-final first leg, Sarri said: "I agree he (Pochettino) has to win a trophy, I hope not this (one). Do I have to win one? I think it is the same of course but Pochettino is in Tottenham from four years ago and I am here from six months.
"I think that here in the first season it is really very difficult for everybody. For Pochettino, four years (without a trophy), for Jurgen Klopp, four years (without a trophy at Liverpool). It was really very hard in the first season also for Pep Guardiola (at Manchester City) so here it is really very difficult to build up a very good team - you need time."
Sarri himself is yet to win a trophy in his managerial career, having largely been in charge of relatively minor Italian teams before taking over at Napoli in 2015 - failing to break Juventus' hold over either Serie A or the Coppa Italia in that time.