Ajax have warned Liverpool to pick up the pace if they want to complete a deal to sign striker Luis Suarez this month.
Liverpool, who beat Wolves 3-0 on Saturday, have publicly declared Uruguay international Suarez is one of their top transfer targets in the January window, with negotiations between the two clubs believed to have already begun.
But, with the transfer deadline less than ten days away, Ajax manager Frank de Boer has warned that the Eredivisie club will be increasingly reluctant to sell the later it gets in the month - as they will then have even less time to secure a replacement.
However, De Boer seemed to acknowledge the club are willing to sell the 23-year-old - who turns 24 on Monday - as he confirmed they have already identified who they want to bring in if Suarez does indeed depart.
"We won't let Luis go on January 31 at 23.55. It is logical and a deal which I made with [general director of Ajax] Rik van den Boog," De Boer told De Telegraaf. "To replace Suarez will be difficult, but we are ready. We have a Plan B, we know what we want if he leaves."
Liverpool manager Kenny Dalglish refused to comment on speculation about Suarez or claims the club have had a £4 million bid for Blackpool midfielder Charlie Adam turned down, but admitted he is keen the strengthen the squad.
"The owners are very supportive and we can bring players in if we find them but the most important thing is to bring in players who can improve us," he said.
"Also we have a huge responsibility to do it responsibly. We are not going to comment on any individual player at any club, we prefer to tell you when we have got something to tell you. I don't think it is fair for us to comment on what is going on or speculate.
"We can bring players in if we want to and it does not depend on people going out. There is no sum of money because that would be stupid but if we need something then it is there.''
Stoke City's Eidur Gudjohnsen and Heerenveen's Bas Dost are two names that have been linked with Ajax as possible replacements for Suarez.