I saw a Boca Juniors game in September 2010..... So while I can highly recommend the experience, my knowledge of the "infrastructure" to accomplish it is far far out of date.... It was a notice on the board at the 2* hotel that generated the opportunity. Not sure that I could afford the experience now....
OTOH my favorite search engine came up with a couple of recommendations for "landingpadba".... And their website does seem to highlight the game of soccer in BA.....
Happy wandering
Fred