The Turkey international was excellent playing at centre-back in place of Maguire, who joined Manchester United last week, during Saturday's goalless draw with Wolves.
Speaking to the club's website, Rodgers said: "Caglar was very good. He's a good defender, he's aggressive, he's filling big shoes, but we always felt we would give him an opportunity.
"He's a young player and he's playing alongside a top-class centre-half in Jonny [Evans] and Jonny will help him in his positioning in the game.
"I thought he was excellent, really aggressive, he won his headers, defended forward, and he's good on the ball. He's got a good turn of speed and I thought he did really well.
"He got a round of applause from the players in there afterwards, so he certainly impressed them and I was delighted for him.
"We kept fighting, we kept working, and we didn't get the three points, but we'll take on, and that gives us something to build on."