By Chris Harris
 
Arsène Wenger has yet to decide whether Sol Campbell can deputise for William Gallas this weekend.
 
The 35-year-old came through an intense 90 minutes in Porto on Wednesday and, if he has recovered sufficiently, should partner Thomas Vermaelen against Sunderland on Saturday with Gallas still sidelined by a calf problem.
 
As revealed on Arsenal.com yesterday, Alex Song and Manuel Almunia are in line to return from knee and finger injuries respectively - although both face fitness tests on Friday. But Abou Diaby is definitely out after picking up a knee ligament injury and Wenger will make a late decision on Campbell's participation.
 
"We have to assess Sol this [Friday] morning and how he recovers," said Wenger at his pre-match press conference.
 
"He gave a lot on Wednesday night - he threw his body everywhere in the action. He finished quite tired but I have 24 hours to assess that.
 
"Manuel has a test in training and Song has a test as well but we lose Diaby so he [Song] should come in for him."
 
Andrey Arshavin and Eduardo are both still nursing hamstring injuries while Robin van Persie, Kieran Gibbs and Johan Djourou are long-term absentees.

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 19 Feb 2010