Simplify the following text for a Grade 6 native English-speaking person.
Original: GÃ 1\/4 nter Theodor Netzer ( born 14 September 1944 in MÃ nchengladbach ) is a former German football player and team general manager currently working in the media business .
Simplified: GÃ 1\/4 nter Netzer ( born 14 September 1944 ) is a former German football player .