If Liverpool's result against Arsenal was anything to go by on Saturday, it's that Jurgen Klopp's side really mean business going forward this season.

Much of the pre-season build up has centred on Jose Mourinho's introduction at Manchester United, Antonio Conte taking the reigns at Chelsea and even Arsene Wenger's lack of spending at the Emirates.

But on Saturday the Reds showed us what a force they can be this campaign, blowing the Gunners away at times to go - at one point - into a 4-1 lead. A couple of sloppy goals gave Arsenal hope but parts of Liverpool's play looked inspired at the Emirates and it showed the hard work that has happened behind the scenes this summer.

And after the win, many teams have tipped Liverpool with an outside chance of the title and after a display like that, it's clear to see why the Reds have gone up in the estimations of many.

Their forward line looked in complete sync and Klopp looked enthralled on the touchline, celebrating wildly with his team as they scored goal after goal.

So with all this in mind, here's THREE reasons why the Reds can really challenge this season....

Existing attacking players

Much has been made of Jurgen Klopp's signings this summer and rightly so, they were excellent against Arsenal.

Much so much credit should go to the likes of Roberto Firmino, Phillipe Coutinho and Adam Lallana who were absolutely excellent throughout. They offered pace, skill and creativity as young defenders Rob Holding and Calum Chambers got an absolute education from their more seasoned opponents.

You almost felt for the pair as Liverpool went forward time after time and plenty of praise should be headed towards Firmino, Coutinho and Lallana.

Sadio Mane

This reason is arguably the easiest in this gallery.

The summer recruit from Southampton was purchased for well in excess of £35million and plenty of Liverpool fans questioned whether it was money well spent before the season got underway.

But during the win, in which he scored a brilliant left-footed goal, Mane looked every bit the player that could Liverpool to success this season. He looked dynamic, pacy and aggressive and Arsenal couldn't deal with him at all.

If he's this good against Arsenal, you've got to worry for some of the lesser teams in this division.

Klopp looks ready to bring success to Liverpool

We know Klopp is a passionate footballing man and we saw that more than ever on the sideline against Arsenal.

We lost count with how many times he lost his glasses, but it really shows just how much he feels for this current Liverpool side and how much he rates their chances of success.

He has every right to be optimistic too, not many teams make as good a start as that. They just need to iron out some slight defensive flaws and they could wreak havoc.