Forthcoming Nessian Demolok has the following abilities.
Tribute 3 (As this creature enters the battlefield, an opponent of your choice may place three +1/+1 counters on it.)
When Nessian Demolock enters the battlefield, if tribute wasn't paid, destroy target noncreature permanent.
Assuming the reminder text is complete and accurate, what happens if you cast Clone choosing a Nessian Demolok? Specifically, does your opponent get a chance to pay tribute?
By the letter of the rules, choices for "As this permanent enters the battlefield" occur before the permanent the battlefield[CR 614.12a], but doesn't Clone's replacement effect happens at the point it enters the battlefield?