The talented midfielder has been attracting interest from both clubs following his impressive displays in Ligue 1.
Barcelona are thought to be keeping a close eye on Lopez with technical director Robert Fernandez and his staff already having scouted him.
But Spanish publication Diario Gol claim Zidane wants to scupper Barcelona’s plans and has instructed Perez to do all he can to stop him joining their arch rivals.
Express Sport brings you all the latest news from Real Madrid
Valuable players out of contract this summer
Thu, March 23, 2017
Express Sport takes a look at 10 valuable players who are out of contract this summer
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1. Jesus Navas (Manchester City) – £12.75m
Florentino Perez hopes Karim Benzema stays at Real Madrid
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The Real chief also refused to rule out bringing Monaco sensation Kylian Mbappe to Real to play alongside Benzema in the near future.
“A Mbappe-Benzema striker partnership? Anything is possble," said Perez.
"Benzema is the best player – and No. 9- in France, I can't say any more.
"I hope Benzema stays here for good. I only talk about Real Madrid players.
"But he [Mbappe] is very good, although right now the focus for Real Madrid is the Champions League and La Liga."
Real Madrid’s next No.1: Who will replace Keylor Navas this summer?
Fri, February 10, 2017
Express Sport looks at the leading contenders to be the next first-choice goalkeeper at Real Madrid (odds provided by www.ladbrokes.com, correct as of 10/2/17)
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Who could replace Keylor Navas at Real Madrid in the summer?
Sergio Ramos was angered by Cristiano Ronaldo's behaviour
Cristiano Ronaldo has reportedly not spoken to Sergio Ramos in five days following an alleged bust-up between the pair.
The Portuguese star was not happy at being substituted in the 79th minute of Real’s 2-1 win over Athletic Bilbao on Saturday.
Ramos wasn’t pleased with Ronaldo’s response and Diario Gol claim he gave the attacker a dressing down after the match.
Ronaldo hasn’t responded well to Ramos’ words of advice though and with both players now on international duty with their respective countries the report suggests the duo are still yet to clear the air.