Simplify the following text for a Grade 7 native English-speaking person.
Original: Aitor ` Txiki ' Begiristain MÃ jica ( born 12 August 1964 in Olaberria , Gipuzkoa , Basque Country ) is a retired Spanish footballer , who played professionally during the 1980s and 1990s .
Simplified: Txiki Begiristain ( born 12 August 1964 ) is a former Spanish football player .