Liverpool are in red hot form at the moment. They fought hard to beat Watford (0-3) away from home at the weekend and have now earned 33 points from 13 PL games. Still, they are second in the table, two points behind Manchester City.
The Sky Blues have more quality and depth as compared to the Reds and Klopp should reinforce his squad in the winter transfer window.
In the last campaign, the Merseysiders conceded 38 goals in the league but this time around, they have been brilliant at the back so far and have only conceded 5 goals in 13 games. Liverpool broke their transfer record to sign Van Dijk in January (2018) and lured Brazilian goalie Alisson in the summer. The duo have been fantastic for the club.
For now, Klopp has got enough quality and depth in his back line with players like Alexander-Arnold, Gomez, Van Dijk, Robertson, Clyne, Lovren, Matip and Moreno around.
On the other hand, the five time European Champions have an overcrowded central midfield with stars like Henderson, Milner, Lallana, Oxlade-Chamberlain, Wijnaldum and summer signings Fabinho and Keita. Therefore, they do not need to reinforce the department.
As far as the attack is concerned, Liverpool do have top quality stars around but they do not have adequate depth. Moreover, they have not replaced Coutinho as yet. The Brazilian international featured in 19 games in all competitions for the Reds last season and directly contributed in 20 goals (12 goals and 8 assists) before leaving for Barca in January.
Klopp opted to sign Shaqiri in the summer transfer window and the Swiss winger has been in good form but overall, he has only started 6 times in all competitions and he cannot be compared with Coutinho.
Therefore, Liverpool must splash the cash to secure the signing of a playmaker, who has what it takes to replace the former Nerazzurri playmaker. They were close to signing Fekir in the summer transfer window but the transfer collapsed after Lyon called off the negotiations with the Reds (The Guardian).
The Lyon skipper was sensational in the last campaign and even this season, he has been in top form. In 9 starts, so far, the French international has scored 4 goals and provided 4 assists. Like Coutinho, Fekir can play in the central/attacking midfield and has got the acceleration and trickery to unlock defenses.
The PL giants are also linked with a versatile American starlet in the form of Pulisic (Mirror Sport), who plays for German side Dortmund and is considered one of the best young attackers in the world.
In your opinion, who should Liverpool sign to replace Coutinho?