"Absolutely it will be a tough test for them, Liverpool have looked good going forward, as we expect, due to the forwards they have," Shearer told Coral.
"They will always score goals and they have continued where they left off last year.
“Four against Norwich, two against Southampton and it could have been more, but there have been one or two worrying signs defensively.
"They conceded against Norwich and could have conceded more, they conceded against Southampton, should have conceded more and they got away with the three points at Southampton.
"Danny Ings missed an absolute sitter in the last minutes, which was most unusual for Liverpool.
Alan Shearer reveals Liverpool worry ahead of Arsenal showdown (Image: GETTY)
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Alan Shearer reveals Liverpool worry ahead of Arsenal showdown (Image: GETTY)
"Yes, you could look at tiredness because of Istanbul, extra time etc., but they'll be working on one or two things."
Liverpool host Arsenal in their fifth game of the season having also taken part in the Community Shield and UEFA Super Cup.
But Klopp is looking forward to facing Unai Emery’s side.
He said: “Both teams are probably offensive-orientated at least, but I have no clue about the result.
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Liverpool vs Arsenal: Pundits preview Premier League clash
“Arsenal can and will probably change at least two key positions: probably [Nicolas] Pepe will start, which doesn’t make them weaker, and [Granit] Xhaka probably, and they can still make other changes.
“It happened a lot to us in the last few months or maybe years that you make an analysis, especially in the early stages [of the season], and then you see against us they play completely differently – playing build-up against everybody and not against us.
“I’m not saying Arsenal will be like this, but it makes analysis quite tricky, especially in the early stages of the season, where we are now.
“I know what they did in the first two games, I know what they did last year against us, but I don’t know more.”