Arsenal head coach Unai Emery has called on his side to improve in the second half of the season, and he highlighted the defence as the key area that needs to be addressed.
The Gunners beat Fulham 4-1 at the Emirates Stadium on Tuesday but were thrashed 5-1 by Liverpool in the previous game in a shocking defensive display.
Emery and Arsenal have been unfortunate with injuries. Rob Holding is a long-term absentee with a ruptured ACL, and Nacho Monreal and Hector Bellerin have also been regularly sidelined.
But the Spanish manager made it clear Arsenal's current defensive work is not good enough after the win against Fulham, per Mark Mann-Bryans of the Press Association (h/t MailOnline):
"Our challenge now is to improve defensively.