Arsenal have two feet in the Champions League quarter-finals. They are there. It would take comfortably the biggest second-leg turnaround in European football history for Mikel Arteta's team not to progress.

In the process of getting a little bit of their mojo back on Tuesday night away to PSV Eindhoven, Arsenal broke all sorts of records. This was the most emphatic first-leg score in the competition's knockout stages, for example.

Ethan Nwaneri continues to glide towards his own position in the history books. He is on course to bypass, not just match or rival the teenage greats of Wayne Rooney and Michael Owen. He is alongside Cesc Fabregas and Lionel Messi as the calibre of player producing at this level at his age.

All of this would be easy to get a little carried away with. Arsenal supporters will be planning their trips to Madrid for the quarter-final already. They know that the tie is dead and buried, so too does everyone else. Arteta and his players may also believe this in the back of their mind, but cannot and will not let any part of that seep into the public.

Instead, Arsenal must put on a determined and straight face. It sounds funny to hear players talk of just looking one game ahead when they are 7-1 up on aggregate against a team with two wins in their last eight.

PSV are all but out of their own title race and completely caved on home soil here. Arsenal were dominant right from the start. There was very little let-off, only Thomas Partey conceding a penalty on the stroke of half-time and Myles Lewis-Skelly escaping a red card acted as small disappointments on a brilliant night.

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Arsenal know that their next opponents will be either Real or Atletico Madrid. They played out a tight-fought 2-1 win for Real on Tuesday. It really is all to play for there.

Jurrien Timber is not getting ahead of himself, though. "I've said we put ourselves in a good position for next week," he told TNT Sport when asked about the quarter-finals. "Finish it and then after we'll see."

He has to say this, really, and cannot be looking ahead to the next round. The quarter-finals are not until after the international break, after all, four weeks down the line. Plenty can change, good or bad.

Arsenal have the chance to build up form and welcome back key players. It is an opportunity that cannot be taken for granted, and the focus of the group after such a big win says a lot about why Arsenal remain in contention for the biggest trophy of them all.

Nobody is counting their chickens yet. Timber said before the match in his home country that Arsenal wanted to change the narrative of this season. "I think that we've done that," he said afterwards. "Massive performance from the team. I'm proud of the guys. We showed today in the Champions League again that we’re capable of a lot and we put ourselves in a good position for next week."

It is a typically measured response and the same message will be echoed in the weeks to come. Arsenal will need this cold-blooded approach to beat either of the Madrid teams, both of whom are extremely experienced in these scenarios and who will likely enter the last-eight as favourites to get into the semi-finals as well.

Arsenal have earned their advantage and must now make good use of it. As ever, keeping their eyes on the prize will be a crucial part of it.