He announced his retirement in an Instagram post which says the following "You must listen to yourself and say stop at the right time.
After 16 years and more than 700 matches played, I have decided to end my career as a professional footballer.
I was able to realise my dream, I have played and had fun on many pitches around the world.
During my career I was lucky to meet great managers, coaches and teammates - thank you to everyone for these great times, I will miss you all.
I also want to thank the clubs I have played for: LOSC, Chelsea and Real Madrid; and thank the RBFA for my Belgian Selection.
A special thank you to my family, my friends, my advisors and the people who have been close to me in good times and bad.
Finally, a huge thank you to you, my fans, who have followed me for all these years and for your encouragement everywhere I have played.
Now is the time to enjoy my loved ones and have new experiences.
See you off the field soon my friends."
His retirement was filled with well wishes from other players as well as fans from Lille, Chelsea, Real Madrid and other rival fans.