Manchester City legend Sergio Aguero has chastised Manchester United striker Alejandro Garnacho online.

Aguero took issue with a post Garnacho made of him and Cristiano Ronaldo after his hat-trick against Norwich City.

The Portuguese striker presented the 17-year-old Garnacho with the ball, which he scored a hat-trick with.

“The greatest player of all time," posted the teen.

“It's just that you haven't played with Messi yet," Aguero answered him.

Garnacho trained with PSG star Leo Messi last week as part of his first call to the Argentina squad.