Liverpool have been adamant Coutinho will not leave Anfield this summer despite Barcelona making a new £90.3million offer.
That bid was swiftly rejected by Reds despite claims in Spain that an agreement was close.
But Klopp appears to have slightly opened the door for the Spanish side.
Klopp told Sky Germany: “From a financial standpoint, there is no price limit to let him go or a price that we are ready to give in.
“Our goal is to have the best possible team. So we want to keep our guys and add new ones. That is our plan.
“Today no player on the planet is untouchable. But a transfer is also a question of timing and if you have the opportunity and the need to react to such a transfer.
“Also you have to ask, if you have the time to react. But just because of one request of one club, we don’t have to think about that. We are not in that situation.
“Liverpool is not a club that has to sell players. That is set in stone. So what they pay in the end doesn’t matter.”
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