Now fully fit, the Swiss defender has impressed since his return.
On Benitez's praise, Schar told Blick: "It's nice to hear that. He knew before my commitment what I am as a player.
"I have my strengths in the game with the ball. I'm still trying to force myself to improve day after day."
Schar went down with Deportivo La Coruna last season.
He added: "I do not think about that. Of course, in England, compared to Spain, you have seven to eight teams playing against relegation. That is already extreme."