Sky Sports sources understand that Arsenal are keen on Chelsea's Brazilian defender Alex.
The Gunners have identified the heart of their back four as one area that needs to be strengthened this summer.
Many will claim that the position has been a problem for Arsenal for some years now, with a number of options having tried and failed to make the role their own.
Thomas Vermaelen has been a success story, but he needs a reliable partner alongside him if Arsenal are to recover from a shaky start to the season.
Bolton's Gary Cahill, Everton's Phil Jagielka, Blackburn's Chris Samba and Birmingham's Scott Dann have all been touted as potential new recruits at the Emirates.
No deals have been done, though, and the Gunners remain short in a vital area of the field.
Wenger could be tempted to turn to Alex in an effort to solve the problem, with the burly South American everything he is looking for.
Arsenal are in the market for a no-nonsense defender, with experiments with ball-playing centre-halves over for now.
Alex would certainly fit the bill and Wenger may test Chelsea's resolve before Wednesday's transfer deadline.