Liverpool boss Brendan Rodgers will hold talks with Raheem Sterling after the young attacker was filmed inhaling nitrous oxide.
The 20-year-old scored in Monday night’s 2-0 victory over Newcastle United but all the headlines after the game were about his private life after images emerged of him appearing to pass out having allegedly taken the legal substance otherwise known as laughing gas.
Rodgers insists he regards the starlet as "super-professional" but the Reds chief made it clear that his behaviour is not acceptable.
He said: "For me it is something that when you are a professional sportsperson at the top level of the game, I don't think it is something you should be doing. It is as simple as that.
"But I will speak to him on it, to see what he says. We want players here who are super-professional and focused on their football. I know he is, he very much is focused on his football and improving as a player.
"As I have said before, young players make mistakes. As long as they learn from them, that is what is important."
The matter adds to the controversy and negativity currently surrounding Sterling amid a wrangle over a new contract.
Sterling risked the wrath of supporters a fortnight ago by admitting he had rejected a £100,000-per-week deal in an interview that was not sanctioned by the club.
Another newspaper also published pictures of him allegedly smoking a shisha pipe over the weekend.
Rodgers, who stressed that any repercussions would be dealt with internally, did not feel the matter would be a distraction.
He said: "You see the way he plays. He is a kid that is very strong-willed and strong-minded. He should have had a hat-trick, his performance was outstanding."
Rodgers' sentiments were echoed by Sterling's former Liverpool team-mate, now TV pundit, Jamie Carragher.
Carragher told Sky Sports: "It's just important he learns from it because Raheem Sterling, for how good a footballer he is, needs to be on the back pages, not on the front pages and that's a problem for him in these last few months.
"But he's a young player, he made a few mistakes and hopefully in years to come he learns from them."