Sol Campbell has officially completed his return to Arsenal by signing a deal until the end of the season.
The 35-year-old defender appeared in a midweek reserve match against West Ham and confirmed his intention then to play again for Arsene Wenger.
The club have confirmed his signing although he is not expected to be involved in Sunday's trip to Bolton.
The move completes a dramatic turnaround for a player who began the season at League Two Notts County, only making one appearance before quitting.
Campbell returns to the club he walked out on in 2006, having left Highbury at half-time of a defeat to West Ham following a poor performance in the opening 45 minutes.
However, he is best remembered at Arsenal for helping the club win two Premier League titles, including the 2003-04 season when the Gunners went unbeaten.
Wenger opened the door to Arsenal's training ground to Campbell following his exit from County, and his efforts sufficiently impressed the Frenchman to sign him up again.
"We are delighted to have signed Sol Campbell until the end of the season," Wenger said.
"For both club and country, Sol's career just speaks for itself. He is a hugely experienced and intelligent footballer, who will bring a great amount of quality and knowledge to our squad. Sol as a player and a person will be an enormous asset to us.
"Sol has been training with us since September and during this time he has shown he still has the required fitness, hunger and passion to compete at the top level."
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