Arsenal have confirmed defender Hector Bellerin has undergone successful surgery on his ruptured anterior cruciate ligament (ACL).
It was later confirmed Bellerin will miss the rest of the 2018-19 season and Arsenal announced on Thursday he has had an operation in Spain, which has gone as planned.
In a medical update posted to the club's website, Arsenal said Bellerin "has now commenced recovery and [his] rehabilitation programme" after completing surgery in Spain on Wednesday.
Ahead of Sunday's trip to Premier League champions Manchester City, Arsenal also had positive news on Laurent Koscielny and Henrikh Mkhitaryan.
Mkhitaryan, meanwhile, is being assessed as the Armenia international prepares to make his comeback from a foot injury.
The Armenian has not featured since the Gunners' 2-0 home loss to Tottenham on December 19 when he was brought off at half-time.
Unai Emery's squad already received a boost earlier today with the arrival of midfielder Denis Suarez from Barcelona on loan for the rest of the 2018-19 campaign.
Suarez penned a new deal with the Catalan club, but Arsenal have the option to force through a permanent deal at the end of the season should they wish.
The 25-year-old links up with his former boss Emery after working with the Spaniard at Sevilla earlier in his career.
But despite the deadline-day signing, former Arsenal player Charlie Nicholas has criticised the club for failing to land any permanent deals this month as they try and fight for a top-four finish in the Premier League.
The north London club are facing fierce competition from Chelsea and Manchester United in particular.
They currently occupy fourth spot but are ahead of the Blues on goal difference alone while United trail them by two points after drawing with Burnley at Old Trafford on Tuesday.