Drogba helped chelsea to the 2012 champions league this year, before leaving stamford bridge to play for chinese side shanghai shenshua.
The ivorian bowed out with his blues career in style, scoring the winning penalty in the champions league final at the allianz arena against Bayern Munich.
Song meanwhile enjoyed a good first half of the year at Arsenal, which earned him a switch to Barcelona in the summer.
The cameroonian has settled in well at the Camp Nou and is part of the Barcelona team currently topping La Liga by nine points.
Manchester City man Toure helped Man City to end their top flight title drought by winnig the Premier League crown earlier this year, while he has continued to be an accomplished performer in England.
The CAF will decide the winner on thursday, in Accra, Ghana.