Simplify the following text for a Grade 6 native English-speaking person.
Original: Abubakari Yakubu ( born 13 December 1981 in Tema ) is a Ghanaian professional football midfielder , who currently is a free agent after being released by Vitesse in summer 2009 .
Simplified: Abubakari Yakubu ( born 13 December 1981 ) is a Ghanaian football player .