Ecuador head coach Felix Sanchez has said it is an honour to face Lionel Scaloni's Argentina ahead of their Copa America quarter-final on Friday.

Sanchez, looking to secure Ecuador's first victory over Argentina since October 2015, praised his opposite number for his role in their 2021 Copa America and 2022 World Cup successes.

"Scaloni has built something with which he has made history," Sanchez said.

"It's a team that, as a spectator, is great to watch. It is an honour to be able to play against a team of this level."

Argentina are expected to be without captain Lionel Messi for the fixture at the NRG Stadium after sustaining a hamstring injury in their 1-0 win over Chile.

However, Sanchez insisted that his side will still face a tough task despite the absence of Argentina's all-time leading goalscorer.

"Obviously, he is a player who makes a difference," Sanchez said. "We have played against them with him and without him.

"The way they play does not change because they have managed to create a solid group and a very defined playing style that can be tweaked depending on the situation.

"We have to be prepared for any possibility and, based on that, adjust."

Sanchez, who took over from Gustavo Alfaro in March last year, has faced La Albiceleste on two occasions, losing both 1-0.

Asked if he would do anything different this time around, he said: "We have to try to compete in the best way against a team that is difficult to score goals against.

"They are very solid and have many offensive variables.

"Something has to be changed to try to go toe to toe with them. Our last few matches against Argentina have been closely fought encounters.

"But now we know that we have to win to advance and our aim is to give ourselves every chance to do that."