PSG host relegation battling Le Havre on Saturday
Lamela, who shone in Spurs’ 4-1 Premier League win over Manchester City last weekend, has been drafted into the squad named by coach Gerardo Martino last week for South American qualifiers at home to Ecuador on Oct. 8 and away to Paraguay five days later.
Messi has been ruled out for up to two months with left knee ligament damage after being injured playing for Barcelona against Las Palmas on Saturday while Sevilla midfielder Banega is nursing a right knee injury.
Lamela, who was part of the squad that reached the Copa America final in Chile in July, last played for Argentina in their 7-0 rout of Bolivia in a friendly on Sept. 5 on tour in the United States.