The Brazilian became the Reds’ fourth signing of the summer tonight as he penned a five-year contract in a deal worth £66m.
Klopp had been keen to sign a new No.1 having lost faith in Loris Karius following the Champions League final defeat to Real Madrid.
And the German admits once it became clear that Alisson was available then the deal was a no brainer.
“At one point in the last few weeks it came up, the opportunity to sign one of the world’s best goalkeepers,” he said.
“Then it’s not a long thought, to be honest, it’s only that you need to have a little talk with the owners. They were quite excited, so we did it.
“I think it’s something we have to do. He has nothing to do with the price, we have nothing to do with the price, it’s the market, that’s how it is and we will not think a lot about it.
“It shows the value of goalkeepers, of course, in this moment. It will happen a lot in the next few weeks I guess and that’s it, so we are really happy to have him here now.
“His English is surprisingly good and he is a real personality. He has meanwhile a lot of experience in the last few years, in Europe and in Rome, he’s played there on an outstandingly high level and he did the same at the World Cup.
“It was for Brazil not too lucky, that’s how it is, but then he played a really good World Cup. So it’s just a good moment.”
Alisson becomes the world’s most expensive goalkeeper, doubling the fee that Manchester City paid for his international team-mate Ederson last summer.
But Klopp admits that the 25-year-old may take some time to adjust to the Premier League.
“The full package is just good,” he added.
“How we all do, he needs to adapt to the English Premier League, that’s how it is. The league is different, the refs are different, the goalkeeper life is different in the Premier League.
“But that’s not important now because again, we got him here because of his existing strengths, which is in all goalkeeper departments the highest level.
“But of course he still has to adapt and age-wise he can improve, the best years are coming in the goalkeeper life, so it’s all good.”
