Hector Bellerin says Arsenal must improve on their ball retention as it's part of their "DNA".

The fullback was speaking after a Nicolas Pepe brace sealed a comeback 3-2 victory over Vitoria in the Europa League on Thursday.

He said: "There's lots of things we've got to improve as a team. We've got to keep the ball better, that's our trademark, when you give the ball away it doesn't mean you stop playing like that, it's in our DNA. You need to keep pushing and doing what you believe in."

Bellerin continued: "It's a great result for us, especially the way the game went. We went from very good wins at the Emirates with lots of goals. We wanted to replicate that but sometimes games are different.

"They are a good team, with good players up top but it's the response. It can be the whole team together or individual players and that's what it was today.

"People thought it was going to be very easy because they'd lost two games, but we knew it wouldn't be like that, we knew it would be hard. We were resilient, we had more chances than just the goals at the end. The team kept believing and we turned it around at the end."