The Brazilian forward has managed to hit the net only three times in 13 Premier League games to date this season and, in comparison to his 15 last term, Firmino's productivity has certainly dipped.
Liverpool are unbeaten in the Premier League this season but will be determined to return to winning ways following their 2-1 defeat against PSG, in which Shaqiri featured as a substitute.
However, speaking at his Merseyside derby press conference on Friday afternoon, Klopp refuted a question over whether he was anxious about his midfield.
But that newfound solidity has come at the expense of sharpness in the final third, Liverpool having scored only 26 goals compared to the 40 netted by Pep Guardiola's league leaders.
Jurgen Klopp insists there are no issues with his midfield engine room amid accusations his side is suffering from a lack of creativity.
"Sunday is another very big game for us".
"We don't need to think we are a s*** team, basically".
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"We've conceded five goals and you talk about how our midfield is "overrun"?" he responded. That is a completely normal thing.
"Are they ready? We will see!" I don't understand it, why should I think about that? "We still have to develop, that's what we do". We want to change and we want to win.
"The moment you sign a contract for Liverpool, you know that you understand 100 percent the responsibility for these games".
"One player doesn't change everything".
"We can take some confidence from the way we played at Chelsea. This is a massive game for our city and we've been on the receiving end too many times". I get constantly confronted by people saying something is missing.
"We've been working very hard since day one under the manager and are putting together some very good results". It is good that we won these games or got results from these games, the most exciting one was the late victor of Sadio (Mane) at Everton - that felt unbelievable.
"Creating is not a problem". No, I don't see any problems in midfield'.