Jurgen Klopp, manager of Liverpool, indicated on Tuesday that his team still has potential for improvement despite a recent surge in Premier League contests as they seek to win a qualifying slot for Europe after a disappointing year.

In their 3-2 win against the bottom-place Nottingham Forest over the weekend, seventh-place Liverpool, who have battled with consistency this season, were not at their clinical best, and Klopp outlined problems they needed to address.

The next opponent for Klopp’s team, who has gone unbeaten in their previous four games, is West Ham United, who just defeated Bournemouth 4-0 to climb up to 13th place.

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“We have to still improve ourselves. We can’t talk about consistency after winning two games, especially when you win a game like the last one,” Klopp told reporters ahead of Wednesday’s trip.

“Our defending against throws was not perfect in the last game. We have to make the next step. We have to keep going.

“We have a lot of things to like in the last two and half games. That is a good way to start a football game and finish a football game.”

Following his return from a protracted injury, Diogo Jota has scored four goals in his past two games. Klopp lauded the Portuguese attacker for his resurgence.

“He got back to speed, he’s an exceptional player. Since he joined us, he did exceptional stuff,” Klopp said.

“Diogo is a super smart player and can play in different positions.

“He’s not the tallest but is an extreme threat in the air and good with both feet and has speed. He had a really bad injury this season and a bad injury before that.”

Naby Keita, a midfielder, could resume training, according to Klopp, who also noted that they need to keep an eye on French defender Ibrahima Konate.

The German also complimented Moyes for saving West Ham from the drop but expressed concern over their set-piece tactics.

“If West Ham would have sacked David Moyes (60) I would have been the oldest (fulltime) manager in the Premier League and I want to avoid that,” Klopp, 55, said with a laugh.

“I’ve known him for seven years, he is doing an incredible job. We are seeing their quality now, it is a super difficult game for us.

“West Ham is a top, top, top set-piece team as well. We have to be prepared for that again.”