He played his last game on August 15 , 1957 against VUC Den Haag and ended his carreer at Olse Merksem .
After 15 years , Mermans left Anderlecht .
Mermans played Mermans ' last game on August 15 , 1957 against VUC Den Haag and ended his carreer at Olse Merksem .
After 15 years , Mermans left Anderlecht .