Ange Postecoglou has said Tottenham have suspended Yves Bissouma for Monday's Premier League opener against Leicester City after the midfielder posted footage on social media of himself inhaling laughing gas.

The Mali international apologised after clips emerged on Snapchat showing him using the class C drug -- also known as nitrous oxide -- and Spurs released a statement stating it would be "dealt with as an internal matter."

Speaking at a Thursday press conference, Postecoglou suggested Bissouma had failed in his responsibilities as a role model and had to rebuild trust in his teammates as he sits out the club's first game of the season.