Saturday 30 September 2017 20:43, UK
Mauricio Pochettino was critical of Dele Alli after he was booked for diving in Tottenham's 4-0 win at Huddersfield on Saturday.
The England international went to ground without any contact after going around Huddersfield goalkeeper Jonas Lossl.
It is the not first time Alli has been booked for simulation in recent seasons, and Spurs boss Pochettino said he "needs to learn".
"I didn't see. It's so difficult for me from my position," he said. "But if it was like this he needs to learn. He must learn. This type of action doesn't help him, doesn't help the team and doesn't help the football.
"We are talking in the last few years about fair play, about being honest. I think he is improving a lot and learning but still he must learn."
Alli will miss England's World Cup Qualifier against Slovenia on Thursday after being banned for one match for making an offensive gesture against Slovakia.
His booking was the only real negative against Huddersfield for Spurs as Harry Kane scored twice and Ben Davies and Moussa Sissoko also netted to secure an impressive win.
"It's so difficult to talk every three days about Harry Kane," said Pochettino. "To find different words to describe him. He's fantastic. He's great in front of goal, but when we don't have the ball he's the first to run, fight, work hard for the team, and that mentality is fantastic."