While talking about Hrithik, Sanjay said in a live Twitter chat session, "He is a dream actor for any director."
When asked what he liked best about Hrithik, Gupta said, "his quest for perfection."
Gupta said they will resume shooting in July with a hope to wrap it up by October.
The film, produced by Rakesh Roshan, also stars Yami Gautam, is set to release on January 26 next year.