Centre-back Rob Holding is fit and available for Arsenal's trip to the King Power Stadium to face Leicester City on Sunday lunchtime, the Gunners have confirmed.
The former Bolton Wanderers man, who signed a new deal at the Emirates Stadium last month, missed Thursday evening's UEFA Europa League triumph over Benfica in Athens after sustaining a head injury in last Sunday's 1-0 defeat to Manchester City in the Premier League.
The Gunners made Premier League history by being the first ever club to use the newly-introduced concussion substitution to take Holding off.
That incident ruled him out of the Gunners' Europa League round of 32 second-leg victory over Benfica, with the defender having to follow strict ruling in regards to concussion injuries.
However, Holding has been given the green light to return to the squad for the clash with Brendan Rodgers' high flying Foxes.
In an update issued by Arsenal, the club said: "Rob is available for selection following the successful completion of concussion protocol.
"Since being substituted last Sunday, Rob has been feeling well at all times and has been closely monitored by our medical team every day at London Colney, where he completed his return to play assessments.
"Rob returned to full training with the squad on Saturday."
That news will be a big boost to Mikel Arteta's plans for the trip to the Midlands, as the Spaniard could be forced into making changes to contend with the fatigue that is likely to have crept into the squad after only playing on Thursday and taking into account the long journey back across Europe.
Whether Holding will, of course, be thrown straight back into the starting line-up remains to be seen.
Elsewhere, goalkeeper Runar Alex Runarsson remains sidelined with a knee injury.
"Following a strain to his knee in training, Alex is undergoing further assessments and continues to be unavailable," the Gunners confirmed in their statement.
