ARSENAL will derive a great deal of confidence from their 7-1 mauling of PSV Eindhoven in the first leg of the Champions League last-16 tie and the Premier League club are determined to keep the momentum rolling, manager Mikel Arteta said.

Arsenal registered their biggest away win in European club competition on Tuesday, putting themselves in a virtually unassailable position to advance to the quarter-finals where they will meet either Atletico Madrid or Real Madrid.

The North London side, who had failed to score in their last two league matches, had arrived in Eindhoven with their Premier League title hopes hanging by a thread after falling 13 points behind leaders Liverpool.

"It obviously gives us a lot of joy, confidence and belief, and then in football, it's not what we did three days ago, or today, it's about what we're going to do tomorrow, or at Old Trafford, how we behave and able to win again," Arteta told reporters.

"Enjoy tonight because it was a very impressive performance, an unbelievable score, so we deserve that, and now take that, and keep improving as a team.

"It's something that hasn't been done so it's great to be a part of that (on achieving their biggest away win in the Champions League), but as a team we want to achieve many other things that are far more important than that."

Arteta also backed Ethan Nwaneri to maintain his performance levels after the 17-year-old winger once again impressed with a fine display and scored Arsenal's second goal.

"I don't think that he needs any pushing! You see him every time he has the ball what the intention is, so if he comes, he comes, and it's great and really impressive again the way he behaved, the way he played tonight," Arteta added.

Arsenal next take a trip to 14th-placed Manchester United in the Premier League on Sunday.

Meanwhile, PSV Eindhoven coach Peter Bosz said he is determined to turn things around for the Dutch champions in spite of a horror week, which culminated in a record thrashing at the hands of Arsenal on Tuesday.

PSV were handed a 7-1 hiding at home in the first leg of heir Champions League last-16 tie by the English club, the first time the club had ever conceded seven goals and also the first time a Dutch club had let in seven goals in a European cup tie.

The rout followed PSV ceding their 56-match unbeaten home record last Wednesday as they unexpectedly lost to Go Ahead Eagles in the Dutch Cup semifinal.

They were then defeated away by the same club in the league at the weekend, slipping eight points behind Ajax Amsterdam in the domestic title race.

"Of course I will get things back on track," Bosz told reporters after Tuesday’s thumping at the Philips Stadion.

"We have to do it together, together we can get through it again. We have shown that we can do it, against Juventus, against Feyenoord in the cup.”

PSV had beaten the Italian giants in the previous round of the Champions League but against Arsenal were swept away.

“It was painful. Humiliating. We had no chance. Outplayed. Bad. Against an opponent who is really good and we are in a difficult phase,” Bosz added.

“If you analyse the goals we conceded, you can see that straight away that we need to defend better."

He felt the match could have gone differently, however. "There were two moments that could have affected the outcome. At 0-0, we hit the crossbar. The second moment was that they could have received a second yellow card.”

Arsenal fullback Myles Lewis-Skelly, who was booked early on, was fortunate not to earn a second yellow card, and a sending off, for a clumsy tackle when Arsenal were 2-0 up.

PSV will be home to Heerenveen in the Dutch league on Saturday and then play away against Arsenal next Wednesday in the return leg in London.