Their No. 9 is now contracted until the summer of 2020, but Liverpool wants to make sure that, if they have to lose Firmino at any point, then they will be able to command the highest fee possible due to having complete security on the contract front.
The Guinean is set to move to Anfield in the summer in a deal that was agreed previous year but there have been suggestions it could be brought forward.
'Nothing has changed and our position hasn't changed from before regarding this transfer'.
It seems as though Leipzig have made a decision to have some fun with Keita and his future, for they sent out a cheeky video on Twitter on Thursday afternoon.
It's a 21-second clip of some of Keita's best passes for the club, but Leipzig started the tweet with the word, 'OFFICIAL: Naby Keïta's...'
If a deal is agreed for Keita in the winter window, he will become the most expensive player in Liverpool's history.
Firmino still has two years left on his current deal, but will apparently be offered the chance to sign a new deal.
The fans who bought Coutinho's 2017-18 Liverpool jersey can get their money compensated at the official club stores with a 50 euros voucher.
Should Liverpool be able to reach an agreement before the end of the window, they would not be able to select Keita for their Champions League last 16 tie with Porto as he is cup-tied but that would not deter Klopp's wish to have the 22-year-old on board.
Keita has established himself as a top midfielder as part of an RB Leipzig side that has soared to relevance following their promotion to the Bundesliga in 2016.
Taking to Instagram, he wrote: "Really enjoyed playing with you even if it was for such a short time".