Omeruo was sold by Chelsea this summer to the LaLiga outfit.
Browsing: Mauricio Pellegrino
The Chelsea defender has enjoyed a fine season on loan with the La Liga club, making 24 appearances across all competitions, including the last 18 straight leagues matches.
The 24-year-old central defender, who can also play at right-back, moved to Stamford Bridge from Standard Liege in 2012.
The 54-year-old replaces Mauricio Pellegrino, who was sacked by the Saints on Monday with the team one point and one place above the Premier League relegation zone.
A statement released by the club reads: “Southampton Football Club can today confirm that it has parted company with First Team Manager Mauricio Pellegrino.
Rafael Benitez’s side start the weekend in 16th, just one place and a single point above their opponents, and know that victory could prove invaluable to their cause
Manchester United’s dismal run of results in December had continued on Saturday with a third consecutive league draw
Charlie Austin, Shane Long and Manolo Gabbiadini are all in contention to start against the Gunners, with Pellegrino likely to stick to his tactics of deploying a lone striker
The Saints make the trip to Merseyside having won just one of their last half-a-dozen fixtures in the top flight, and Mauricio Pellegrino is under pressure to deliver a result on their visit to the North-West
Despite a relatively respectable eighth place finish in the Premier League and reaching the League Cup final last season, it came as no real surprise when Puel was given his P45 just 12 months into a three-year contract