With a foot injury, Salah was replaced seconds after converting a second-half penalty in Liverpool's 2-0 win over Brighton on Saturday.
The Egypt international skipped training on Monday, raising concerns about his fitness ahead of the midweek trip to the Emirates, but Liverpool manager Klopp claimed the Egypt international has recovered well.
Mo appears to be a difficult cookie. It was a stroke of luck for us "In his pre-match press conference, Klopp told reporters.
"It was swollen and painful, but yesterday it was a little less so. Before the press conference, I received word that he is ready to train, and we'll see how things go.
Klopp was also questioned about Salah's agent sending a cryptic tweet after the Liverpool manager commented on the 29-year-ongoing old's contract dispute last week by stating that the situation would be resolved soon "We won't be able to do much more. Mo is the one who makes the decision "..
Salah's current Anfield contract expires in less than 18 months, and his representative Ramy Abass Issa appeared to answer to Klopp with a row of seven laughing emojis.
Klopp explained, "Another good explanation for that is that I'm not on Twitter." "The last thing I want to do in a news conference is make headlines, but I'm not aware of any replies or other such information."
"That isn't anything I'm concerned about." The key players are in communication, and we'll see what happens."
After being held to a goalless draw by Crystal Palace on Monday Night Football, title-chasing Liverpool go to an in-form Arsenal hoping to get to within a point of leaders Manchester City.
The Reds have won their last eight Premier League games, and Klopp has vowed to be "as unpleasant as possible" to Pep Guardiola's team in the final ten games of the season.
Of course, that is the plan, to continue to be as unpleasant as possible," the German explained.
"We must win all of our football games." We're ambitious and determined to accomplish big things, but we also recognize how talented they are.
"We respect all of the other teams we'll encounter even more." There are only a few that are truly difficult. Every Premier League game is difficult, but there are a few that are particularly difficult, one of which we will face tomorrow night.
"I'm sitting here and saying 'we'll win ten games' doesn't sound very feasible, but I can assure you that as long as it's possible, we'll give it our all."
