I think he will concentrate on his youth academies now
From his Face Book Page
I'm thankful to PSG for giving me the opportunity to continue but I feel now is the right time to finish my career, playing at the highest level. If you had told me as a young boy I would have played for and won trophies with my boyhood club Manchester United, proudly captained and played for my country over one hundred times and lined up for some of the biggest clubs in the world, I would have told you it was a fantasy. I'm fortunate to have realised those dreams.
To this day, one of my proudest achievements is captaining my country. I knew every time I wore the Three Lions shirt, I was not only following in a long line of great players, I was also representing every fan that cared passionately about their country. I'm honoured to represent England both on and off the pitch.
I wouldn't have achieved what I have done today without my family. I'm grateful for my parents' sacrifice, which made me realise my dreams. I owe everything to Victoria and the kids, who have given me the inspiration and support to play at the highest level for such a long period. I also want to thank Simon Fuller and his team for their continued support.
I want to thank all my team-mates, the great managers that I had the pleasure of learning from. I also want to thank the fans who have all supported me and given me the strength to succeed.
Nothing will ever completely replace playing the game I love, however I feel like I'm starting a new adventure and I'm genuinely excited about what lies ahead. I'm fortunate to have been given many opportunities throughout my career and now I feel it's my time to give back.