Manchester United centre-back Lisandro Martinez has sung the praises of teammate Alejandro Garnacho.

Garnacho was handed his first United start by Erik Ten Hag against Sheriff in the Europa League, and the teenager showed no signs of nerves as he lit up Old Trafford during his side's 3-0 win.

Martinez feels Garnacho, who has also declared his international allegiance to Argentina after representing Spain at youth level, has all the tools to thrive at the highest level.

"He has enormous talent and a bright future," Martinez told ESPN Argentina.

"It all depends on him, on what he works for, but he's young, he has to keep learning, at his age he's in a team that isn't easy [to get into].

"I tell him he has to take advantage of the moment, listen, ask for advice, do extra training. He has no ceiling. He will give Manchester United and the national team a lot."