Liverpool transfer rumour: Reds plot triple raid on Bundesliga trio Niklas Sule, Loris Karius and Mario Gotze

Liverpool are plotting a triple raid on Bundesliga as Jurgen Klopp has set his sights on signing Hoffenheim defender Niklas Sule, Mainz goalkeeper Loris Karius and Bayern Munich midfielder Mario Gotze.

According to the Daily Mail, the German coach has doubts over the centre-back options he has at Anfield. The Reds have the services of Mamadou Sakho, Dejan Lovren and Martin Skrtel, with Kolo Toure set for summer exit after his contract expires in June.

Skrtel's long-term future at Liverpool remains uncertain as Turkish champions Besiktas are considering a move to sign him in the summer transfer window. Sakho is waiting for his punishment for failing a drugs test and with no new deal handed to 35-year-old Toure, Lovren will be the only recognised central defender in the squad.

The Merseyside club have already agreed a deal for Joel Matip from Schalke as the defender will move to England on a free transfer. Klopp needs to further strengthen his back four and Sule tops his wishlist. The Hoffenheim defender's physical ability could suit the Premier League and he could form an all-German centre-back pairing with Matip for the next campaign.

Goalkeeper Karius is also on Klopp's radar as he looks to improve competition in that position. Simon Mignolet is the first choice keeper and the arrival of the German stopper will see the former Sunderland man fight to be the first choice keeper at Liverpool.

Klopp remains hopeful of completing a deal for Sule and Karius, along with Gotze. The World Cup winner with Germany has one year left on his contract at Bayern and his future remains uncertain as he has been constantly linked with a move to Anfield.

Gotze played under Klopp when both were at Borussia Dortmund and the two could reunite if the midfielder decides to make a switch to Liverpool. The Sun reports the deal is set to be close in bringing Gotze to England as Klopp looks to start a German revolution.

Klopp plays high pressing game and he feels the addition of German players to Liverpool squad will improve the athleticism in the squad. He also believes the arrival of several of his compatriots can instil the German mentality as the Reds look to challenge for silverware in the 2016/17 season.