If there were any doubts over the good relations between the two sides, Perez's compliments when asked about Barcelona's current situation have put them to rest.
"They will get ahead of it for sure," the Real Madrid president said on El Chiringuito. "In life, there are better and worse economic situations.
"[Barcelona] are one of the biggest clubs in the world.
"They may be going through a difficult situation but they have mechanisms to get ahead of it.
"We all wish it for the good of Spanish football.
"LaLiga should be the sporting director at Barcelona. They say who they can or cannot sign.
"Barcelona are a great club. In my opinion, we are the two best teams in the world and when we play El Clasico it is watched by 600 million people."
As for Barcelona's signing of Robert Lewandowski, Perez said: "We could have looked to sign him, but he is a very good player who isn't free. When it comes to Lewandowski, everything that is good for the Spanish league is good for everyone."
As for his relationship with Barcelona president Joan Laporta, Perez spoke glowingly of his rival following his return.
"Barcelona are a club that is worth a lot of money and they can go through a bad time," he said.
"You have to do the things you have to do when you are in a bad situation.
"Laporta has been at the club for just over a year, things don't get fixed overnight.
"Have patience and you will see that there will be great El Clasicos.
"We don't talk every day but we do when something worries us. We have a good relationship."