Schoonjans started his youth career with Stade Leuven, before it merged into
OH Leuven in 2002. With OH Leuven, he promoted up two levels from the
Belgian Third Division to the
Belgian Pro League as the club got promoted in 2005 and 2011. In these ten years, he featured in 150 matches for OH Leuven, scoring 18 goals in the process. During the first half of the
2011-12 season however, he was surpassed by
Bjorn Ruytinx and
Derick Ogbu, only allowing him to make three substitute appearances, of which one was in the
Belgian Cup. He was loaned out for six months to
Belgian Second Division team
Sint-Niklaas during the
winter 2011–12 transfer window, but released upon return. He subsequently signed a full contract with Sint-Niklaas. ==References==