Simplify the following text for a Grade 3 native English-speaking person.
Original: Borja OubiÃ a MelÃ ndez ( born 17 May 1982 in Vigo ) is a Spanish footballer who plays for Celta de Vigo , as a defensive midfielder .
Simplified: Borja OubiÃ a ( born 17 May 1982 ) is a Spanish football player . He plays for Celta Vigo .