Since the day it has been confirmed that Ranbir Kapoor’s much talked about debut world tour plans will be revived and will commence in the second half of 2012, his superstar father Rishi Kapoor has been busy finalizing the finer details of the tour. But not many now that apart from planning and executing yesteryear actor Rishi Kapoor is expected to perform at the grand musical extravaganza.

Yeah it might sound surprising but it is more or less confirmed that the "Karz" star may perform on his chartbusters songs as well as with his son Ranbir also. Rishi Kpaoor confirmed this piece of news however revealed that the plan’s execution depends on the nature of his health during the required dates.

Rishi Kapoor since last few days has been suffering from acute pain in his knees after he met with a small action while performing some stunts in the film "Agneepath" where he played the baddie. “It all depends how my knee recovers from pain. I may or may not perform with Ranbir. Let’s see how things work out in future” said Rishi Kapoor.