What a night for Serge Gnabry.The former Arsenal player scored FOUR goals as Bayern Munich thrashed Tottenham 7-2 at the Tottenham Hotspur Stadium.Not bad for a player Arsenal allowed to join Werder Bremen for just £5 million three years ago.The 24-year-old is quickly becoming one of the best wingers in world football.He’s already scored nine goals in his 10 appearances for Germany.

And now he’s producing wonders in the Champions League.

But he hasn’t forgotten his Arsenal days, it seems.

Despite only playing 18 times for the Gunners before leaving the club, Gnabry tweeted: “North London is RED!!!” after his four-goal haul.

Very cheeky.

He also had a word for the Arsenal fans in his post-match interview.

“It’s difficult to put this into words, winning 7-2,” he said.

“None of us would have imagined this. To have scored four goals is also an amazing feeling.

I imagine all the Arsenal fans enjoyed that one! Obviously it’s a great for us, we’re going to enjoy the evening.

Arsenal fans may not have too many fond memories of Gnabry playing for their side but they would have thoroughly enjoyed watching him help humiliate their north London rivals in front of Europe.

One of Gnabry's former Arsenal teammates, Hector Bellerin, also appeared to enjoy it.

He tweeted: - "@SergeGnabry joke man 😂😂😂😂" after he grabbed his fourth goal.