Arsenal goalkeeper Wojciech Szczesny has admitted that his team will need to be at their best to stop Diego Costa from scoring against them when they face Chelsea on Sunday.
The 25-year-old has scored eight goals in six Premier League matches for the Blues since joining the club from Atletico Madrid in the summer.
"Costa is incredible," Szczesny told Arsenal Player. "His partnership with Cesc Fabregas and Eden Hazard has been incredible and, at the moment, he's looking as dangerous as any striker in the world.
"We've got huge respect for him and we know how dangerous he is. I think he's scored in most games so it'll be a tough test.
"At the moment [Chelsea] are as good as you will get in Europe. They score goals and they've always defended very well so it'll be a very tough test but it's one that we're looking forward to. Hopefully we can leave last season's result behind us and show that we can get the result against them."
Costa scored 36 goals in all competitions for Atletico last season as they won the La Liga title.
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