Jose Mourinho had some honest words for Dele Alli when the pair first spoke at Tottenham.
A chat between coach and player was revealed during Amazon Prime's All or Nothing: Tottenham Hotspur documentary.
"Maybe, inside, you are telling me to f*** off, but I have to tell you exactly what I see," Mourinho starts.
"I have no doubts about your potential. I saw you do incredible things in incredible matches. But I always felt that you had ups and downs.
"There is a huge difference between a player who has consistency and a player who has moments. That is what makes the difference between a top, top player and a player with top potential.
"It is something to analyse yourself for you to realise why your career has been MK Dons, Tottenham, national team... bang!
"Then, when you reached the top, why do you have these little ups and downs.
"I don't know if it is to do with your lifestyle - if in one period you were an amazing professional but in another period you felt you had become a party boy.
"I have no idea - only you can know that.
"I am 56 now and yesterday I was 20. Time flies.
One day I think you will regret it if you don't reach what you can reach.
"I am not expecting you to be the man of the match every game. I am not expecting you to score goals every game. I want just to tell you that you will regret it.
"You should demand more from yourself. It should not be me demanding more from you.
"Nobody else. You. You should demand more from yourself."