English TV personality Piers Morgan has claimed that Manchester United would be fighting against relegation had they been without Cristiano Ronaldo this season. The Red Devils were without the services of the five-time Ballon d'Or winner during their 4-0 humiliation at the hands of Liverpool on Tuesday due to the death of his newborn son.Manchester United went into their game against Liverpool on the back of just two wins against Tottenham and Norwich in their last five Premier League games. Ronaldo scored sensational hat-tricks in both victories. United struggled against Jurgen Klopp's side in the absence of their star forward. They were unable to create goalscoring opportunities and test Liverpool goalkeeper Alisson.The 37-year-old has received heavy criticism for his lack of work rate and impact in the big games. His goals have, however, helped keep Rangnick's side in the hunt for a place in the top-four of the Premier League. Morgan believes the club would be at risk of being relegated were it not for Cristiano Ronaldo's performances."Manchester United without Ronaldo this season would facing a relegation battle. Absolute abysmal performance," said Piers Morgan on Twitter in the aftermath of the Red Devils' loss to Liverpool.Here's Morgan's tweet:Piers Morgan@piersmorganManchester United without Ronaldo this season would be facing a relegation battle. Absolutely abysmal performance tonight.9502984Manchester United without Ronaldo this season would be facing a relegation battle. Absolutely abysmal performance tonight.Ronaldo joined United from Juventus in a deal worth £13 million last summer. The 37-year-old was expected to lead the club to their first Premier League title in nearly a decade.The club have endured a dismal campaign and are currently languishing in sixth place in the league table. The Portuguese star does, however, possess impressive goalscoring numbers. He has scored 21 goals in 35 appearances in all competitions for United this season.Piers Morgan@piersmorgan‘He’s finished..’ ‘He can’t take free kicks..’ ‘He’s the problem at Utd.’ Nope, he’s just the @Cristiano twitter.com/sportbible/sta…SPORTbible@sportbibleCristiano Ronaldo scores the 50th hat-trick of his career. 21 goals in all competitions with Man United this season.99141511Cristiano Ronaldo scores the 50th hat-trick of his career. 21 goals in all competitions with Man United this season. https://t.co/Ui78vyPLKG‘He’s finished..’ ‘He can’t take free kicks..’ ‘He’s the problem at Utd.’ Nope, he’s just the 🐐 @Cristiano twitter.com/sportbible/sta…Manchester United need to sign a world-class striker this summer to compete with Cristiano RonaldoSL Benfica v AFC Ajax: Round Of Sixteen Leg One - UEFA Champions LeagueManchester United have been heavily dependent on Cristiano Ronaldo's goalscoring abilities this season. Bruno Fernandes is the club's second highest goalscorer with just nine goals in all competitions.The former Real Madrid forward has shown signs of slowing down and is approaching the latter stages of his career. The Red Devils must sign a world-class striker to share the goalscoring responsibilities and replace Cristiano Ronaldo as the club's talisman next season.AA Football@AAFootball110AA FOOTBALL EXCLUSIVE: Manchester United are in negotiations with Benfica over Darwin Nunez. The player is understood to be worth around £65m. Big clubs will be interested in the player because he wants to leave the club and get a new challenge. #MUFC8🚨AA FOOTBALL EXCLUSIVE: Manchester United are in negotiations with Benfica over Darwin Nunez. The player is understood to be worth around £65m. Big clubs will be interested in the player because he wants to leave the club and get a new challenge. 🔴 #MUFC https://t.co/rwjpuagu50According to Metro, the Premier League giants have identified Benfica star Darwin Nunez as their top transfer target. The 22-year-old has scored 33 goals in 38 appearances in all competitions this season, and is widely expected to make the move to one of Europe's top clubs this summer.