Jurgen Klopp sarcastically described Dietmar Hamann as "a fantastic source" after the former Liverpool player suggested the club's poor form may lead to a change of manager.

Liverpool head into Wednesday's Champions League group game at Rangers with just four wins to their name from 11 matches this season in all competitions.

Sunday's 3-2 loss to Arsenal leaves Liverpool with 10 Premier League points this term, with that their lowest tally after eight games since the 2012-13 campaign (nine points).

And speaking on Tuesday, Hamann said Liverpool chiefs may soon have to discuss Klopp's future at Anfield after seven years in the job for his German compatriot.

Klopp did not take kindly when asked for a response to Hamann's comments during his pre-match press conference ahead of the Rangers match.

"Who said that? Didi Hamann? Oh great. A fantastic source, well respected everywhere," Klopp said.

"[Being a former Liverpool player] does not give you the right to say what you want, especially when you have no idea.

"I actually think Didi Hamann does not deserve that you use his phrase to ask a question. Do me a favour and ask your own question."

Liverpool have won back-to-back matches in the Champions League, including a 2-0 win over Rangers last week, since going down 4-1 to Napoli in their Group A opener.

That loss to Napoli came in their most recent away match in the competition, though not since September 2019 have they lost successive games on their travels on the continent.

Klopp's mood was not improved after it was confirmed that Luis Diaz will miss the next two months, while Trent Alexander-Arnold and Joel Matip are out for a fortnight.

But the Liverpool manager, whose second-place side sit three points behind Napoli and three ahead of Ajax, insists he is up for the challenge of turning things around.

"If you sleep on a problem, sometimes you realise life goes on. I just stood there at Arsenal and we had lost the game. I knew already that we had three big injuries," he said.

"This is a tough situation but it also a challenge. We always face challenges but we go for it.

"I am sorry to all our people that after last season we go again and it's not the case that we are competing for everything.

"I cannot promise that we will fly [against Rangers] but we will fight, definitely, until someone tells us the fight is over. 

"It hasn't got easier since Sunday because of the injuries but the team I saw in training I liked a lot. So let's give it a go."

Former Bayern Munich midfielder Dietmar Hamann has declared Robert Lewandowski did the club a "huge favour" by making it clear he wanted to join Barcelona.

The Poland international this month completed a €50million move to the Catalan giants, bringing an end to his trophy-laden stint in Germany.

Bayern were initially adamant that Lewandowski would not be allowed to leave, despite being in the final year of his contract, but the prolific striker was determined to move to Barca.

The 34-year-old eventually got his wish and Hamann believes Lewandowski helped the Bundesliga champions get a great deal when they sold him due to the way he went about his business with a "distasteful" approach.

"I think they are happy that he has gone. This whirlwind of signings began and he made some statements," he told Sky Germany.

"It has to be said that Bayern behaved very well and very professionally. Lewandowski did [Bayern] a huge favour with his statements.

"Without them, [Bayern] probably never would have been able to get the price that they obtained. As distasteful as his exit was, Lewandowski did Bayern a huge favour."

Lewandowski this week made his Barca debut in a pre-season victory over Real Madrid in Las Vegas.

Xavi's side begin the new LaLiga season at home to Rayo Vallecano on August 13.

Former Bayern Munich midfielder Dietmar Hamann has admitted he's "cautious" about the club's deal to sign Matthijs de Ligt from Juventus.

The 22-year-old has swapped Turin for the German capital ahead of the 2022-23 season, following what was a difficult three-year stint in Italy.

De Ligt struggled to establish himself as a core member of Juventus' defence and, as a result, saw his stock fall dramatically after previously being widely considered to be one of the best defensive prospects in world football.

Bayern will hope that he can fulfil that potential in Bavaria but Hamann has urged caution about expecting too much from the Netherlands international.

"The big question will be whether De Ligt is able to lead the defence," he told Sky, "He did a wonderful job in Amsterdam. He didn't make it in Turin. 

"Of course, it was a bigger club, bigger competition and he had very experienced players next to him.

"And I don't know if he's the player who comes here now at 22 and immediately leads a defence that was Champions League winners two years ago.

"He may have two world champions next to him in Pavard and Hernandez. That all sounds wonderful. Whether this can then be implemented in practice remains to be seen."

De Ligt is not the only member of Ajax's 2018-19 Champions League semi-final side that has found difficulties since moving to new teams, with Donny Van de Beek at Manchester United and Hakim Ziyech at Chelsea struggling for regular opportunities – which Hamann pointed out.

"All the players who left the very successful Ajax team three years ago were all at best followers of their new clubs," he added.

"And that's why he still owes the proof that he can lead a defence like that of Bayern Munich. I would be a bit cautious."