Liverpool have some of the best defenders in Premier League history on their books right now. Virgil van Dijk may be the best centre-back the league has ever seen, and the same could be said about Andrew Robertson at left-back. Meanwhile, Trent Alexander-Arnold at right-back may well be one of the best full-backs in the history of the game at the age of just 25. Troy Deeney has now had a go at ranking some of the very best defenders in Premier League history on his TikTok page, and he’s made an interesting claim about Alexander-Arnold in the process. Indeed, the former Watford striker put Alex…