"Wow..." - Jurgen Klopp blown away by what Alexis Mac Allister did in Liverpool training

Liverpool finally return to action on Wednesday when they face Karlsruher in their opening pre-season friendly in Germany.

It will be a new-look Liverpool team that starts the match at BBBank Wildpark.

Roberto Firmino, James Milner, Alex Oxlade-Chamberlain and Naby Keita are no longer with the Reds, having left the club at their end of their contracts last month.

Alexis Mac Allister and Dominik Szoboszlai have arrived for a combined fee of around £95m and Jurgen Klopp will be hoping for further signings before the transfer window closes.

Mac Allister and Szoboszlai joined up with their new teammates last week and have already made an impression in training, with the Hungarian fitness levels particularly catching the eye.

Klopp impressed with Mac Allister

Footage has now emerged of Klopp being blown away by Mac Allister's own fitness and determination in training.

In the clip posted on the club's Twitter account, Mac Allister is filmed scoring a goal from the edge of the box, prompting Klopp to shout: "Wow, Macca!"

Mac Allister then rushes back into position during the training drill, quickly winning the ball back from Kostas Tsimikas to delight of Klopp, who responds: "I love it, Mac Allister!"

Liverpool defender Andy Robertson says both Mac Allister and Szoboszlai have settled quickly at their new club.

"They've settled in very well," Robertson told the club's website.

"Obviously the fans will want to see them on the pitch and the fans will want to see how they do in the Premier League and so on. But the first couple of days what they've done is settle in quite seamlessly.

"It's a very open squad. It's a good squad if you're a new player to come into. We welcome everyone with open arms and try to settle them down as much as possible. I think we've done that.

"And then on the pitch you see their quality – I don't think anyone has questioned their quality throughout their career. That's why we've paid the money to get them.

"They're showing their quality, they're showing what they've got, they're learning the way that we need them to play, and then I'm sure the fans are excited to see them because we are definitely excited to see how they do in the Premier League.

"From what I've seen so far, I've got no doubts they will be a success at this club."