#3 Ben Woodburn
The youngest player on this list by some distance, the 17-year-old became Liverpool's youngest ever goalscorer (17 years and 45 days) when he scored in the EFL Cup against Leeds. On 2nd September, he became the second-youngest goalscorer (behind Gareth Bale) for Wales when he scored against Austria in World Cup qualifying.
These are some impressive records for such a young player. Even though he plays as a winger, he doesn't possess the pace that is naturally associated with the position. Instead, he relies more on dribbling and passing to create chances for his teammates.
As his screamer for Wales suggested, he's also got a very good shot, which makes his playing style similar to Philippe Coutinho.
Unfortunately, Liverpool's extensive attacking options in the form of Mane, Salah, Firmino and Coutinho mean that he isn't likely to get many first-team opportunities.
But he's still only 17, and Klopp is a manager who likes to give a lot of chances to youth players. Woodburn will definitely get chances in cup matches against lower league sides, giving him invaluable experience.
A loan spell or two might be on the horizon for the youngster. And you never know, if Coutinho eventually decides to join Barca, Klopp might not need to look farther than his own academy for a long-term replacement.