Kylian Mbappe appeared to be annoyed with Chelsea striker Olivier Giroud after a video showed the Paris Saint-Germain forward momentarily looking less than pleased in the France dressing room.
The pair had both started in France's goalless draw with Portugal in their Nations League clash on Sunday evening.
Both nations cancelled each other out, despite the attacking talent on display from both sides with Cristiano Ronaldo and Bruno Fernandes both lining up for Fernando Santos' team.
A video clip posted on Get French Football News' Twitter account appeared to show the scenes in the France dressing room after the game.
Giroud can be seen walking to shake hands with Lyon's Houssem Aouar and Mbappe but afterwards, the Chelsea forward ruffles the latter's hair - something which the World Cup winner did not appear best pleased about.
Shortly after another clip showed Mbappe brushing his hair after Giroud's playful gesture.
After the match, Mbappe also took the chance to send a social media message to his childhood idol Ronaldo, describing the Juventus superstar as an "idol".
The Frenchman has previously spoken about his adulation for Ronaldo in the past.
"He is a hero from my childhood and it was amazing to meet him when I visited Valdebebas," he said.
"But I am a competitor and a person who is very competitive and all I want to do is win, win, win.
"So it doesn't really matter who is in front of us, we want to win.
"I admired him when I was younger, but that ended. Now I go to the Bernabeu to play and to win.
"From someone who has won five Ballons d'Or you can learn a lot.
"He's a great player, but I have those here [at PSG] too.
"Neymar is here and I think he is very similar and is at practically the same level as Cristiano Ronaldo."
