Arsenal defender Per Mertesacker wants his side to take the 3-3 draw against Anderlecht on Tuesday night as a ‘warning’.
The Gunners were 3-0 up after an hour at home in Tuesday’s Champions League clash but saw their three goal lead slip as the Belgian champions drew 3-3.
Mertesacker admits that he and his team-mates are to blame for the result and said that they need to do more to ensure a win.
He told the press: “That was a good warning that everyone should raise their game and give maybe 10 per cent more when it is needed.
“When we drop sometimes, everyone has to be involved to defend. You can’t afford for just five or six players to defend, or just the back four. That is what we lacked, especially in the final third, and in the last 20 minutes.
“We have to defend better as a team. We did not stop them playing and they are good at it. As you could see, even in the final third, when you do not put them under pressure, they can deliver good balls through the middle.
“They can cause trouble and we just left them playing so, in general, that was the problem.”