His Contract expires in 2018 with a option to extend one further year in 2019 and if he stays until the end of the 2018/19 Season he would be 36 years old and I could see him possibly retiring.
But when the time comes he will leave on a High Note, knowing he helped contribute winning the Club winning a Second Treble and a Domestic Double in the following season. and possibly even more trophies before he decides to call it a day.