Bollywood actor Hrithik Roshan, on Sunday sent a warm birthday wish to his director Siddharth Anand. Taking to Instagram, the `Krrish` actor dropped a picture, which he captioned, "Hi man, let`s get the ball rolling on the rest of the movies we waiting to make. Enuff! O and happy birthday :) Chal bye."

In the picture, the `Dhoom 2` actor could be seen standing beside the `Bang Bang` director with his hand on his shoulder. The `Krrish 3` actor is all set to collaborate with director Siddharth once again for an aerial action thriller film `Fighter` which also stars Deepika Padukone and Anil Kapoor in the lead roles.