Robert Lewandowski has backed Liverpool to challenge for the Premier League title with "ruthless" Jurgen Klopp in charge.
Liverpool have enjoyed a positive start to the season, winning five of their seven league matches, including victories at Arsenal and Chelsea.
Lewandowski, who worked under Klopp at Borussia Dortmund, thinks they have a "real chance" of competing for the title.
"Under Klopp I think they will be fighting for the title this season," Lewandowski told Goal. "Pep and Manchester City will not make it easy for anybody to win the title, but Liverpool have a real chance.
"Without European football it can really help them with being fresh for games and with injuries and, even though Klopp is always smiling, he is ruthless enough to take advantage of that."
Klopp twice led Borussia Dortmund to the Bundesliga title and also to the final of the Champions League.
"I have watched some Liverpool games since the arrival of Klopp, and you can see that the players are enjoying playing for him," Lewandowski added.
"As a player you know that he totally has your back, he is like a father figure and, because you have that trust in him as a player, it makes you totally open to his methods and his ideas which, in the long term, you always see are for the benefit of your game and for the team."