Simplify the following text for a Grade 6 native English-speaking person.
Original: Sergi BarjuÃ n i Esclusa ( born 28 December 1971 in Les Franqueses del VallÃ s , Barcelona , Catalonia ) , simply Sergi , is a former Spanish footballer , who played as a left defender .
Simplified: Sergi BarjuÃ n ( born 28 December 1971 ) is a former Spanish football player .