Borussia Dortmund are reportedly demanding more than £130m for Bellingham, while Liverpool are said to have spent £250m improving their squad after a mediocre first half of the campaign.
“I don’t know the amount of money,” Klopp told reporters.
“But I’m not against investing, to be honest! We will see what will happen in the future.
He added: “January, in our situation, is a window where we always say from a sporting side that we are always prepared.
“That’s how it is. We always work with what we have and that hasn’t changed. We’re looking and if something happens, we’ll see.
Liverpool face Aston Villa on Boxing Day and Klopp drew positives from a Carabao Cup loss to Manchester City ahead of the Premier League restart.
He said: “We left some space between us and the much more exciting positions on the board.
“We have to hunt. I saw some good signs last night, I wasn’t happy with everything, our counter press was almost non-existent, which I didn’t like.