#6 Philippe Coutinho

In terms of pure talent, Philippe Coutinho was Liverpool's best player for the majority of the mid-2010s. He was the Reds' talisman during their transition from Brendan Rodgers to Jürgen Klopp.
After making the move from Inter Milan for a bargain £8 million, Coutinho has progressively become more consistent in a Liverpool shirt and started scoring many fantastic long-rangers, including famous ones against Manchester City and Southampton.
The Brazilian even scored the goal that most thought had won the league for Liverpool in 2014, pouncing on a sliced clearance in the 3-2 win against Man City. While he was good under Rodgers, Coutinho seriously stepped up his game when Klopp took over in late-2015. He became much more influential and improved his all-round game, helping Liverpool reach the Europa League final in 2016 and the Champions League places in 2017.
Even after expressing his intentions to leave the club for Barcelona, Coutinho continued to prove his brilliance at Anfield and enjoyed an excellent first half of the 2017-18 season. He scored twelve goals from September to December, falling two short of his best goalscoring season for Liverpool. Coutinho left the club in January, for a whopping £142 million.
The Brazilian has certainly enjoyed his best footballing days so far at Anfield, with him yet to show the incredible form he attained under the German manager.