Arsenal signed five new players during the most recent transfer window, but the Gunners might not be done buying.
This past weekend's 4-3 loss at Blackburn showed that Arsene Wenger's squad still needs strengthening, especially at the back.
Between now and the January transfer window, the Gunners figure to be scouting several players across Europe.
They'll also be boosted by the returns of central defender Thomas Vermaelen and midfielder Jack Wilshere from injuries.
But as the Blackburn match showed, Wenger will want to add cover for the matches in which his top players are out.
English international Gary Cahill is one defender Arsenal reportedly pursued during the August transfer window.
That report said Cahill's contract with Bolton includes a £17 million buyout figure, which is much more than Arsenal offered.
The deal didn't happen in August, but if Arsenal raises its offer, it might be able to sign Cahill in January.
Another defensive potential option for Arsenal's defense was on display Saturday—for the other team.
Blackburn leaked three goals, but defender Chris Samba again played well for the Rovers.
Arsenal manager Arsene Wenger was reportedly interested in signing Samba in August, even after it became apparent that Per Mertesacker was headed to London.
The deal didn't happen, but Samba showed Saturday that his physical style could help Arsenal with its set-piece woes—if the price is right.