Klopp says he and Liverpool's recruitment team are always looking at potential solutions for his squad.
"Are there players out there on the market who could help us as well? Probably, yes," Klopp said.
"This is a challenge to us to improve a really good football team. But time is a challenge as well. Nobody knows what the future will hold for all of us, so how can we make decisions, really expensive decisions, about how we deal with it?
"This team is how it is. It does not mean we do not want to strengthen it if we have the opportunity or if we have the financial resources. It will always happen. We will always try.
"But at the moment it is a difficult time and this team makes pressure on each other, by itself, internally in training the quality is high.
"This is a difficult year for all football clubs in the world and it is not just a time when we talk about transfers as if the rest around us has not happened. It is not possible. At least, not for us. We cannot do it like this.
"Other clubs maybe can, but this club is lead in a specific way. This is our way and here we are. Is it the best way? I do not know, but we will stick to it."