The Gunners appointed Emery as Arsene Wenger’s replacement in the summer after the Frenchman led Arsenal to a disappointing sixth-placed finish last term.
Emery’s side lost to Manchester City and Chelsea FC in his opening two games in the Premier League to make a suspect start to his spell in charge of the north London side.
However, the Spanish head coach has bounced back in impressive style with seven victories and two draws to remain unbeaten since the second weekend of the season.
Arsenal came from behind to hold title rivals Liverpool FC to a 1-1 draw at The Emirates on Saturday evening after Alexandre Lacazette’s 82nd-minute goal cancelled out James Milner’s second-half opener.
The Gunners showed their resilience on the pitch to bounce back from the setback of conceding as the Arsenal supporters helped to rally their team at The Emirates.
Former Liverpool FC captain Redknapp believes Emery has helped to lift the dark cloud over the Emirates Stadium and restore the feel-good factor in north London.
“What struck me most about Arsenal’s draw against Liverpool was the Emirates atmosphere,” Redknapp told the Daily Mail.
“The fans were brimming with optimism and it was a ground transformed. That is all down to Unai Emery.
“For the last 10 years, their fans have been crying out for grit and determination in their team. Now, Arsenal do not know when they are beaten.”
Arsenal are in fifth place in the Premier League table and four points adrift of Liverpool FC in third spot, while leaders Manchester City are a further two points clear of Jurgen Klopp’s side.
The Gunners will welcome Sporting Lisbon to The Emirates in the Europa League on Thursday night after a 1-0 win in Portugal last month to maintain their perfect start to their European campaign.
Emery’s side will be hoping to return to winning ways following successive draws when Arsenal host Wolverhampton Wanderers at the Emirates Stadium in their next Premier League fixture.
Arsenal have only dropped points on one occasion at The Emirates this term.
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