RM fans using Lucho as an example of someone that was underrated and ended up with a trebble, day-dreaming about a similar scenario with Rafa are hilarious.
The probability of Rafa being a failure at RM is higher than him winning even a double, sure it's not guaranteed, but I think we'll have a much clearer picture by december, as many have said, about who he'll bring, how he'll setup the team, and how he handles the vestuary.. still too many unknowns, but if I had to bet money on a scenario, i'll bet on him failing.
Let's not forget that the "normal" scenario for RM is to fail, they only win a lone trophy here and there bar last season, the media and the madrid propaganda wants to make us believe that suddenly RM is a realistic trebble contender each season, they're not