The German tends to take a long-term view in identifying and chasing transfer targets and backs himself to improve players already in the squad rather than risk money on a panic signing.
Liverpool had a strong window last summer as they brought in the likes of Sadio Mane and Joel Matip, but Klopp will still feel a sense of frustration that the club have failed to add players in key areas.
The Merseyside club risk missing out on a place in next season’s Champions League and Klopp is still in the market for a left-back, central midfielder, striker and goalscoring wide player having missed out on several targets since his appointment in October 2015.
Christian Pulisic (Dortmund)
Liverpool made an £11m bid for the 18-year-old last summer and planned a fresh bid in January, only to be told they “don’t need to waste their time” by Borussia Dortmund’s sporting director Michael Zorc. In January, Pulisic signed a new contract until 2020.
Ryan Sessegnon (Fulham)
Liverpool held talks with Fulham in January over a deal for the 16-year-old but could not agree a fee. They are favourites to sign the left-back in the summer amid fierce competition, but will need to pay around £15m.
Mahmoud Dahoud (Gladbach)
The Reds failed with a £25m pursuit of the central midfielder last summer, with Borussia Monchengladbach determined to keep Dahoud at the club after selling Granit Xhaka to Arsenal. Jurgen Klopp continues to scout the 21-year-old amid suggestions of an £8.5m release clause in his contract for the coming summer.
Mario Gotze (Bayern/Dortmund)
Liverpool made Gotze their top target at the end of last season as Klopp looked to re-unite with the playmaker, who had lost his way at Bayern Munich. The Reds claimed to have pulled out of talks but in reality, Gotze rejected the move in favour of a return to Borussia Dortmund.