Inter Milan manager Simone Inzaghi was overheard warning Marcelo Brozovic about Harvey Elliott ahead of their game against Liverpool on Wednesday evening.
The incident happened in the tunnel at the San Siro, shortly before the Reds recorded a crucial 2-0 win thanks to goals from Roberto Firmino and Mohamed Salah.
Elliott, 18, may have been an unknown quantity to Inter and Inzaghi heading into Wednesday's fixture after a remarkable emergence at Anfield.