Evening Football/volleybal for fun (Brussels)

Hey guys! I am a Dutch young professional living in Brussels and I would like to start playing some Football or Volleyball during the evenings (once a week or so), preferably around Schuman area, but anywhere in Brussels would be OK. The main goal would be to get some exercise and have fun (and possibly a beer afterwards) rather than real competition (I’m not that good anyway smile emoticon ). Therefore I was wondering if any of you already do this on a regular basis or if there are other young professional around that are interested in starting it up? let me know!