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Liverpool raced to the Premier League title in record time, as the Reds have been crowned Premier League champions for the first time in 30 years.
Liverpool are 20 points ahead of second place Manchester City and have the opportunity to win the league with record points.
While the Reds strolled to the title this season, it might not be so next season, as other clubs will fight as well.
Meanwhile, Alan Shearer has backed Manchester City to fight for the title next season, and also believes that Manchester United and Chelsea will pose a threat as well.
“Even without David Silva, Manchester City will still expect to put up more of a challenge to Liverpool in 2020-21,” Shearer wrote in a column for BBC Sport.
“The same goes for Manchester United; I can see them getting closer next time.
“Chelsea too – they might still be a couple of players short of winning the league, but they are heading in the right direction.”
Michael Owen has also warned his former club Liverpool that they will face tough competition in their quest to retain the title.
“I think they’re [Liverpool] a very, very strong team that’s probably going to be strong for some time,” Owen told Premier League Productions.
“[But]That’s not to say they can’t be caught. Manchester City are a phenomenal team and if they turn it on we’re going to have a great title race.
“Manchester United are the first team outside those two that spring to mind because they’re improving at a rapid rate.
“Chelsea are showing a lot of intent with their signings. They’ve been banned from signing players for some while but now they’re making a big splash and they’ve got some youngsters coming in.
“Frank Lampard looks like he has the bit between their teeth. There’s lots of teams that look like they could do it [challenge] but I think they’re the main two [as well as City].”