"It was his dream (to move to Barcelona) and there was a moment when we had to accept that".
Klopp has already had to offload one unhappy player in Coutinho after the Brazil global made it clear he would not let a second attempt to sign him by Barcelona pass him by and the club eventually relented after a £142million offer was accepted.
Roberto is known for his flexibility and is fit for playing in the two positions which is something that Klopp is searching for.
While he acknowledged that it is "not too cool" that Coutinho has left, he says it is "not a real problem at all" because they will "bring in other players that's for sure", adding: "If we do it in this [January] window?"
I think City have done a great deal to convince everyone that they can defend over the last few months but the doubts I had at the start of the season were fully exposed by Liverpool during the early blows of that game.
"Replacement? First of all we have to replace him internally".
Liverpool take on Manchester City in the Sunday afternoon game at Anfield.
GETTYGary Neville says Jurgen Klopp will have gone crazy after Liverpool's 4-3 win over Manchester City
"We had a lot of talks about different things, how we can do this or that, but if somebody denies things like that then it is clear the decision is done". It came up massively that it would be very hard if we say: "Here's your contract, you have to stay here" and to use him as a player in the second part of the season. I just want him to be one of the best in the world and enjoy what he can do'. "I think Barcelona have signed a top, top player who suits perfectly the way they want to play for the last 20 years".
However, despite their dominance, and Klopp labelling his Spanish counterpart as simply "world class", the German has claimed Liverpool will not treat Manchester City differently to any other opponent they face, insisting it is his side's performance that is most important. We played fantastic football without Phil. You can defend it of course but it's really hard.
"He wasn't ready to do it anymore". But we tried everything [to keep Coutinho]. "If we do it in this window, I don't know", he explained.
"I haven't really even thought about Phil leaving", Oxlade-Chamberlain said.
"We just try to do the things that we do well and then we will see what happens".
"We had fantastic games with him and not so good games with him, and the same when he didn't play". I believe he knew back in August that he would have to find an alternative for Coutinho.
"Of course, is a master of the counter attack, so they're a team who can arrive in the finishing area in three or four touches".