It's far from a crisis at Liverpool, but it is certainly the time for questions to be asked.

After conceding three against Leeds on the opening day, the Premier League champions went and shipped seven at Aston Villa in the final game before the international break.

As a result, there will be something of a mini-inquest going on in Jurgen Klopp's head.

And it is not just the defence he will be looking at.

There are a host of players across a wealth of positions that Klopp will be thinking about.

Here, we round up five players in the Liverpool squad who will need to prove a point to Klopp following the international break...

Roberto Firmino

Firmino has not yet found the net for Liverpool this season

There's been a lot of questions about Firmino and his goalscoring ability, or perhaps a lack of it.

You can bet that Klopp will not be worried, given that he uses the striker in a more hybrid midfield role.

But with fans beginning to ask a few questions, a couple of bad performances following the break could leave his position in the team vulnerable.

Brazil used him as a No.9 in their win over Bolivia, in which Firmino scored twice, so perhaps a slight tinker to his role with Liverpool could see him excel.

Xherdan Shaqiri

Shaqiri's time at Liverpool feels like it is edging to an end

The fact that Shaqiri is still a Liverpool player right now remains somewhat remarkable.

He has proven to be a shrewd signing for just £12million, playing major roles in some iconic nights at Anfield.

But he is clearly out of favour now and has just two months to work his way into Klopp's thinking, otherwise he will be looking for a new club come January.

Adrian

Adrian is standing in for Alisson for the next few weeks

Liverpool's capitulation against Villa all started when Adrian's over confidence on the ball saw them caught out.

There were other moments in the game which surely will have left Klopp and his goalkeeping staff scratching their heads.

With Alisson still due to be out for a few more weeks, Adrian will keep his spot in the Liverpool goal.

But any more cock-ups and Klopp will surely be scowling the market for a more reliable No.2.

Diogo Jota

Jota is looking to nail down a place in the Liverpool XI

Jota's start to life at Anfield probably could not have gone better. He has a goal, he has been playing well and the fans love him.

But this is where it gets difficult: maintaining that level.

Jota is competing for places in the Liverpool front line with the likes of Firmino, Sadio Mane and Mohamed Salah. If he lets up, he will be out of favour quicker than he realises.

He also needs to show how he can adapt to being in and out of the team, as he will be at Liverpool, rather than the near-automatic starting berth he had at Wolves.

Virgil van Dijk

Van Dijk is going through his toughest run of form since joining Liverpool

Without a shadow of a doubt, Van Dijk will not be dropped by Klopp.

But for the first time since he signed for the Reds, there are question marks over the Dutchman.

That's because against Villa, he got caught out against the counter attack numerous times.

He clearly doesn't like the scenario and you can bet your bottom dollar that other Premier League clubs have noticed that.

When he's back, Van Dijk needs to prove once and for all that he is still the best centre-back in the world.