Gibbs turned 25 on Friday and is in line to feature for Arsene Wenger’s side when they host their north London rivals at Emirates Stadium on Saturday.
Oxlade-Chamberlain posted the picture of the duo above showing the pair celebrating Arsenal’s FA Cup triumph at Wembley back in May.
And the midfielder wrote: “Happy birthday to my brother, the man that hasn’t taken me under his wing for the last 4 years and one half of the Gibbs legacy…. @kierangibbs.”
Gibbs has made over 150 appearances for Arsenal since making his debut in the 2007-08 campaign.
The left-back joined the Gunners’ youth set-up from Wimbledon back in 2004.
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