Julen Lopetegui warned not to doubt Real Madrid's players after Lionel Messi claimed Juventus are one of the clear favourites to win the Champions League following Cristiano Ronaldo's move to Turin.
Ronaldo left Madrid for Juve in July, ending his battle with Messi on the domestic stage at least.
Though Madrid lost the UEFA Super Cup to neighbours Atletico, Los Blancos have made a superb start to life under former Spain coach Lopetegui, taking nine points from their first three games in La Liga.
Juve have done the same in Serie A and are already two points clear at the top.