Today, Mbappe posted a photo of himself and Ethan on instagram
When Killian played for Monaco in 2017, Ethan once trained with the Monaco youth team. After his brother joined Paris Saint-Germain, his younger brother who came to Paris naturally joined the youth academy of Paris Saint-Germain. In 2018, he represented the Paris Saint-Germain junior team in a number of junior tournaments: the Mediterranean International Cup in March 2018 and the GIF Cup U12 Invitational Tournament in May 2018.