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Jamie Carragher could hardly have been stronger in his words – and they resonated with a lot of Liverpool supporters.

Avert your ears, Simon Mignolet and Alberto Moreno.

“Going forward for Liverpool, those are two areas Jurgen Klopp has to change in the summer,” said Carragher after Sunday’s League Cup final defeat.

“The left-back has to come out of the team. (Jon) Flanagan has come back fit and has to go into the team in midweek. He can’t be worse than him (Moreno).

“The goalkeeper may have signed a five-year deal, and he has made some good saves (against Manchester City), but things have to change.”

Judging by the reaction across social media, plenty agree with him. And these concerns are not new.

Whether Carragher will get his wish this summer remains to be seen. But if Liverpool were to look at replacing two of their first-teamers, then where could Klopp look?

GOALKEEPER

Marc-Andre Ter Stegen (Barcelona)

OK, no points for imagination here. The Barcelona shot-stopper has been linked with the Reds on a daily basis during the past 12 months. Familiar to Klopp from his time at Borussia Moenchengladbach, the 23-year-old is a ‘cup keeper’ at Camp Nou – though that includes the not-inconsiderable task of keeping goal for Barca in the Champions League – and the lure of regular first-team football could work.

He’s a good cat, too. Excellent with his feet, confident in his own abilities and with good reflexes.

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Jack Butland (Stoke City)

Again, not too much imagination required here. The England international has been one of the Premier League’s outstanding ‘keepers this season, taking his chance at the Britannia following Asmir Begovic’s departure.

He’d cost, of course. English players always do. But if his development continues, he would box off that No.1 jersey for years to come.

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Worth a mention...

What about Gianluigi Donnarumma, already a starter at AC Milan despite only turning 17 last week?

Or how about the plethora of Bundesliga stoppers – Bernd Leno (Bayer Leverkusen), Timo Horn (Cologne), Yann Sommer (Gladbach), Ralf Fahrmann (Schalke), Loris Karius (Mainz)?

Maybe Jasper Cillessen of Ajax could step up, or could the brilliant Jan Oblak of Atletico Madrid be tempted? Probably not, in fairness.

In France, Stephane Ruffier of Saint-Etienne has his fans, as does Marseille’s Steve Mandanda, who is out of contract this summer.

LEFT BACK

Jose Gaya (Valencia)

OK, so signing a young left-back from La Liga has not worked out well for Liverpool this time, but Gaya is not Moreno. He’s as quick and as energetic, but better defensively and has more reliable delivery in the final third. He’s also got admirers across the continent, and would cost plenty.

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Ben Davies (Tottenham)

Prior to Moreno’s signing in 2014, Liverpool had looked into the possibility of bringing the Welsh international to Anfield. In the end, Davies moved to Tottenham from Swansea, but has had to battle with Danny Rose for the left-back spot at White Hart Lane.

Tall, composed and positionally decent, he’s more a steady signing than a spectacular one. But that’s not necessarily a bad thing.

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Worth a mention...

It’s been a problem position for Liverpool for so long, but there are options out there. Could Klopp return for Germany for Marcel Schmelzer, one of the more understated members of his Dortmund side? Could Ricardo Rodriguez be tempted to swap Wolfsburg for Anfield, and at what cost?

What about Jetro Willems at PSV Eindhoven, or Wendell of Bayer Leverkusen? Both have Champions League experience and youth on their side. As does Juan Bernat of Bayern Munich, though that might be a bit too ambitious. Jonas Hector of Cologne could be a bit more realistic.

And not forgetting...

Those already inside Anfield. Jose Enrique will leave in the summer, but Flanagan will surely be given a new contract, and both Joe Gomez (18) and Brad Smith (21) have shown promise when handed an opportunity.