Irish fly half Johnny Sexton returns to the blue of Leinster this morning. 

The 29 year old begins pre season training with the province ahead of the World Cup. He left the province in 2013 to join Racing Metro but returns to Dublin after leaving his contract a year early in Paris. 

Sexton joins former team mate Isa Nacewa in the Leinster backline this season. Nacewa also left the province in 2013 to return home to New Zealand but has signed a one year deal.