It has not, so far, been quite as successful as the real thing, but Ancelotti is a shrewd coach and strategist and Unai Emery will have to get his tactical response right.
We have been been made to play at home for the first leg (thanks UEFA!) which is normally an advantage to the away side.
Aubameyang turned provider for Arsenal's second, chasing down a Ramsey pass before it went out of touch and crossing for Ainsley Maitland-Niles to smash a header in to double the hosts' lead.
'My dream goes on, ' said Cech after Arsenal recovered from 3-1 down after the first leg to beat Rennes, another of his former clubs, 3-0 at the Emirates and move into the last eight.
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In the next 10 games left of the season, the goal is to be back and fight to be competitive. They looked good to me, Isco got a goal.
The draw for the Europa League quarter-finals was completed on Friday, with Arsenal handed a tough draw against Serie A powerhouses Napoli. "The offside was very clear, you don't need VAR to see it. I missed two chances to close the game but, okay, most important we won today and we are all happy and proud".
"We are going to think the same before every match".
Against Napoli, though the tied has reserved and the Gunners will now have to play the second leg in Italy.
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Many supporters wanted Wenger out after a poor couple of seasons, with Arsenal only finishing sixth in the Premier League last season.
Alexandre Lacazette was able to take his place in a strong Arsenal side against Rennes after his three-match ban for a sending-off in Borisov was reduced to two on appeal.
Rennes were again unhappy with the Latvian officiating team when Alexandre Lacazette escaped a second yellow card before the French worldwide was replaced by Alex Iwobi. "And the last teams, they are all very important, and it's going to be very hard", Emery said.
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As it turned out, the fact he was signed for five more years made him very attractive and allowed us to get legitimate value". And I can tell you the Giants, absent a strong pitch by Cleveland, would still have Beckham on the team today.