The Belgian goalkeeper joined Club Brugge earlier this week after six years at Anfield.
Speaking to the club's website, he said: "Well over the last few years now I always thought and said that I want to be playing again, that I want to be back on the pitch.
"They were the team that wanted me the most, that pushed the most to come and get me. Like yesterday, I played the game and although it was a European first leg so you can't really say it's already won, I was on the pitch and kept a clean sheet. We won 1-0 and the feeling afterwards, that's what I wanted again.
"That's why we are football players, to have that feeling again [and] to be not only important in the dressing room and being professional and pushing the lads on - I wanted to be important again on the pitch and that's the opportunity I've got now, and that's why I grasped it with my two hands."