That meant that Arsenal were ahead on the away goals rule, but the Gabon global ensured that they would not need to rely on that method of victory when he found the back of the net for a second time late on, to put the Londoners through 4-3 on aggregate.
In the past Arsenal have struggled to break down sides, and they still do sometimes, but the striker's performance today won the match. We have good possibilities in the next month to do something important.
'It was hard for us because we had to play with 10 men for about 50 minutes of that first game as well.
Despite going up 2 goals early, the match was never truly secure for Arsenal, who are always prone to defensive mistakes. We made it hard, but we knew how strong we are at home and we deservedly went through tonight'.
Arsenal are fourth in the Premier League table, holding the final Champions League qualification place, although triumphing in the Europa League offers another potential route back into the continent's elite.
Meanwhile, Manchester United, Liverpool, Manchester City and Tottenham Hotspur have made it to the quarter-finals of the Champions League.
It's also because it's one title and I think we can feel the possibility to win one title, doing this way with a hard moment like today and playing also against big teams.
'It proves that when people say the Premier League is the best league around, they are not saying it for free.
"We can be proud today".
He said: "There's an terrible lot more possibilities when you've got two strikers".
"And second, it means that Naples are in the final and I am happy".
Ismaila Sarr's third goal for the hosts in the dying embers of the first leg looked to have swung the tie Rennes' way and the Senegalese had the chance for a vital away goal, only for Sead Kolasinac to produce a saving last-ditch tackle.
'We were confident. We knew after the first leg even if we lost, if we played our game we could win and go to the next round'.