Tottenham midfielder Yves Bissouma will miss their Premier League season opener against Leicester City after being hit with a club suspension.
Ange Postecoglu's side head to the newly-promoted Foxes on August 19 with new signing Dominc Solanke expected to make his debut following a club record £65m ($83m) move from Bournemouth.
However, Malian international Bissouma will not be involved, following a video of him appearing to inhale laughing gas was posted on social media.
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Postecoglu has taken a hard line approach over the incident and insisted the former Brighton & Hove Albion star must learn from his mistake.
"When a situation like this arises, I look at them in a couple of ways. First, there's a person, it's Biss and he's made a poor decision", Postecoglu stated as part of his pre-match press conference.
"He won't be available on Monday. We've suspended him for the game. He needs to build that trust back with both me and the group. The door is open for him and hopefully we can help him realise the decisions he makes impact the group."
Alongside Postecoglu's update on the situation, Bissouma has also apologised for a 'severe lack of judgment' over the incident, and he is still training with the first-team squad.
The suspension is not expected to stretch beyond the trip to Leicester and Bissouma should be involved for Spurs' first home clash of the new season against Everton on August 24.