The ex-Blancos striker suspects that his old side will crack under the pressure if their one-time 10-point advantage is reduced to a solitary point on Saturday nightReal Madrid hitman Fernando Morientes believes that a victory for Barcelona in this weekend's Clasico would strike fear into the hearts of Los Blancos.
The now-retired striker's old club go into the game at Camp Nou with a four-point advantage in hand over their Catalan arrivals, meaning Jose Mourinho's men will still be on top of the table regardless of the result.
However, Morientes feels that the balance of power will shift dramatically in favour of the Blaugrana if they triumph on Saturday night given they were 10 points adrift as recently as last month.
"If Barca win they will fill Madrid with fear in their bodies, because in just a short time they will have seen their 10-point cushion [dramatically] reduced," the former Spain international is quoted as saying by Cadena Cope.
"The psychological aspect will be a determining factor in the game. Madrid cannot play for a draw. They have to go to win, to attack and play the football that their players are capable of.
"If the game gets difficult, they can start thinking about just getting a draw. However, there is a lot of risk attached to just thinking about trying to defend against a team like Barcelona."
The top-of-the-table clash in Catalunya gets under way at 20.00CET.
Goal.com will be hosting a LIVE Twitter Q&A on Friday at 14.00BST as Goal.com Spain Editor Martin del Palacio Langer and Goal.com International Features Editor Carlo Garganese debate whether Lionel Messi and Cristiano Ronaldo are the two greatest players of all time. Throughout the LIVE we want to hear your thoughts and opinions on the subject, while we will also be putting your questions to Martin and Carlo as we look to bring the debate to an end.