Lallana has impressed many with his performances, and Pochettino has gone as far as to mention him in the same breath as Champions League and World Cup-winning midfielders from the Camp Nou.
"Adam is special, he is a very unique player," the Saints boss told reporters. "There is not another player in the country like him.
"Lately he has had a number of opportunities to get into the England national side so that is a very good thing for him.
"I am always telling him that he has the characteristics of a Spanish player and he has the skills of an [Andres] Iniesta, Xavi or [Cesc] Fabregas."
Lallana made his Southampton debut in 2006 after graduating from the club's academy.