Olympique Marseille centre-back Duje Caleta-Car has attracted a late market approach from Liverpool.
The Croatia international came close to joining West Ham United last summer for £22million but turned them down in hopes of playing Champions League football in the future.
Car, who is comfortable on the ball and a left-sided defender, is a key member of Andre Villas-Boas' side - starting 24 times for the Ligue 1 outfit this season - and has now emerged as a target to bolster Liverpool's backline, says the Daily Mail.
However, while the 24-year-old had agreed to come, Marseille's inability to find an immediate replacement threw the deal into doubt on Sunday evening.
Jurgen Klopp has been hoping to add to his options in defence after seeing his side suffer a number of injuries this season - with Virgil van Dijk and Joe Gomez being sidelined for long spells, while Joel Matip has also struggled with fitness issues.
The Reds have agreed a £2million fee with Preston North End defender Ben Davies and Klopp is hoping a deal for Caleta-Car can still be salvaged.