Barcelona notched their first away win this season in Xavi Hernandez's first away game in charge as late goals from Memphis Depay and Philippe Coutinho secured a 3-1 victory over Villarreal
Vinicius Junior scored his 10th goal of the season as Real Madrid thrashed Granada 4-1 on Sunday.
Emery appeared open to a return to the Premier League on Tuesday night, when he admitted there had been "interest" from Newcastle. He added that if an offer arrived, he would speak to Villarreal president Fernando Roig.
The Argentine was taken to hospital after suffering breathing problems on Saturday as Barcelona drew at home with Alaves.
The six-time Ballon D'Or winner will be 35 by the time the World Cup — a trophy that has eluded him through his stellar career — comes round in Qatar next year.
Atletico Madrid spurned the chance to move level on points with Real Madrid on Thursday after conceding from two penalties, the second in the 89th minute, to draw 2-2 away at Levante.
"I don't think there is a solution," said Koeman in a press conference on Tuesday. "For me it's a social problem, they are people who have an education problem, they don't know what morals and values are."
Barca have now lost a fourth consecutive Clasico for the first time since 1965 and drop to ninth in LaLiga, five points behind Madrid, who trail Real Sociedad by one.
"As Barcelona coach you have to take the pressure, no problem. I know the importance of a Clasico," Ronald Koeman said ahead of the clash against Real Madrid.
With Ansu, Barcelona have hope, the 18-year-old, who wears the number 10 shirt previously belonging to Lionel Messi, now the symbol of what the club are promoting as the 'Dream Teen', and optimism for an exciting future.
Julen Lobete fired inside the near post in the 90th minute to snatch a 1-0 victory for Real Sociedad.
The measure comes at a time when COVID-19 cases in Spain have dropped to their lowest level since July 2020.
Barcelona want to increase Camp Nou's capacity to 110,000 while also refurbishing its surrounding area, which includes a pavilion for the club's other sports, the museum and stores.
Espanyol had won just once in seven games this season but they hung on grimly in five minutes of added time to take all three points.
Koeman’s future has been in serious doubt after Barca were beaten 3-0 by Benfica in the Champions League on Wednesday, a defeat that leaves them bottom of the group.
Barcelona’s 18-year-old Pedri also made a return to the Spain team, while Enrique deemed it too soon for Ansu Fati, the 18-year-old who's made only two appearances for Barca after 10 months out with an injury.
Barcelona are in last place of Group E and at risk of not making the knockout rounds for the first time in 20 years.
Fati, wearing the number 10 shirt previously belonging to Messi, came on to a raucous reception at Camp Nou, 323 days after his last appearance. The 18-year-old scored to complete a much-needed victory for Barca.
LaLiga: Atletico Madrid fail to go on top of league after being stunned by last-placed Deportivo Alaves
Victor Laguardia scored with a header off a corner four minutes into the match, giving Alaves their first points of the season and preventing Atletico from regaining the league lead.
Koeman's position is fragile, after Barca followed up a 3-0 defeat by Bayern in the Champions League last week with a 1-1 draw at home to Granada in LaLiga, with the team's tactics and style coming under scrutiny.