Lionel Scaloni's Argentina have done well at the 2021 Copa America, winning three of their four group stage games.They will now face Ecuador in the quarterfinals of the tournament. A lot is expected from Lionel Messi and the Argentina national side, and so far they have performed up to the expectations.#CopaAmérica 🏆 ¡Llegamos a Goiania! Seguimos juntos detrás de un mismo objetivo 🤜🏼🤛🏼#VamosArgentina 🇦🇷 pic.twitter.com/eYm36pVa6W— Selección Argentina 🇦🇷 (@Argentina) July 3, 2021Winning the Copa America will be no easy task, especially given the form Brazil are in. However, Argentina certainly have a strong squad and manager Scaloni has a variety of options to choose from.We look at how Argentina could line up against Ecuador in the Copa America 2021 quarterfinal.Goalkeeper- Emiliano Martinez (Aston Villa)Aston Villa v West Bromwich Albion - Premier LeagueEmiliano Martinez was one of the best goalkeepers in the Premier League last season and will likely start for Argentina against Ecuador.The 28-year old, who joined Aston Villa from Arsenal last summer for £15.5 million, enjoyed an excellent debut season with his new club. It is clear that Martinez is now Argentina's first-choice shot-stopper, and has looked good during his initial appearances for his country.🏆🇦🇷 @Argentina pic.twitter.com/MqJ9MJFbTR— Emi Martínez (@emimartinezz1) June 30, 2021A late bloomer, Martinez made his debut for Argentina only this year. Argentina national team manager Lionel Scaloni has a lot of difficult decisions to make, but he should have little problem with choosing his no.1.Other options: Franco Armani (River Plate), Agustin Marchesin (Porto), Juan Musso (Atalanta)Also Read: Fabrizio Romano's Transfer Roundup: Updates on Cristiano Ronaldo and Lionel Messi's futures, Arsenal active in the transfer market and more