Going back to Zaheer are we? Can't say that I'm too keen on that tbh, let's look at getting as many young guys in as possible yeh.
I would be happy if selectors don't go toward Zaheer but they are likely to do so because we don't have an experience bowler right now. Yes, Ishant Sharma has played 52 tests but he still sucks and he is nowhere near being a consistent bowler. So I am pretty sure you will see Zaheer on that tour unless he is injured/retire. Same goes with Gambhir. I don't think they will pick Mukund because if you remember, for the 4th test against Australia, selector's original pick was Gambhir for Dhwan's replacement but because Gambhir was ill, they picked Raina. That means they are still keen to bring Gambhir back because of his experience at the top of the order.