Liverpool have been charged by Uefa after the City team coach was damaged outside Anfield before kick-off but it was the noise inside that Oxlade-Chamberlain has cited as having the greater influence on the first leg.
"It was an wonderful atmosphere, the best I've ever played in", said the £40 million summer acquisition from Arsenal.
"That's what we were hoping for, that when he came here he could make the next step with us, but it was never because of Arsenal or Arsene Wenger, it was always only because some things didn't work out that well any more".
Redknapp reckons an exit was inevitable and claims Oxlade-Chamberlain in particular has flourished since packing his bags. I could have been better on the ball so I was a bit disappointed with that.
Oxlade-Chamberlain was accused of not reaching the next level while at Arsenal, but Klopp insists the midfielder does not blame Wenger for that and only needed a change in environment. Only he can say what exactly stopped him from reaching his pinnacle at the club, but it was telling that his departure last summer was met with a mixture of regret and relief among fans.
The 24-year-old English worldwide scored 20 minutes in Wednesday night, his second goal against Manchester City, the Premier League champions-in-waiting this season. While he may be indulged the occasional blip along the way, he now needs to show consistency in his preferred berth in the midfield as he approaches what should be his professional prime.
Oxlade-Chamberlain believes their set up under Klopp makes them contenders to go all the way to the final in Kiev. With his confidence surely at an all time high after the night of his life at Anfield, Oxlade-Chamberlain now has an excellent chance to leave any regrets from his time at Arsenal behind.