Former Arsenal midfielder Kristoffer Olsson is on a ventilator in hospital after collapsing at home, his current club FC Midtjylland have announced.
The Danish giants revealed that the 28-year-old 'lost consciousness' at his home on Tuesday, February 20, and was subsequently transferred to Aarhus University Hospital.
They say that the Sweden international is 'affected by an apparently acute disease related to the brain, which is not due to self-harm of any kind, nor is the cause due to external factors'.
The statement continues: "A team of Denmark's leading medical experts is currently working at high pressure to make a diagnosis and initiate the right treatment.
"Since admission, Kristoffer has been surrounded by his immediate family and parts of FC Midtjylland's staff, and is being treated by specialists in the field.
"FC Midtjylland urgently requests the public to show respect and understanding, so that Kristoffer, the family and the doctors get the necessary peace of mind to ensure Kristoffer's recovery and recovery as well as possible.
"Everyone at FC Midtjylland is of course deeply affected by Kristoffer's sudden illness and our thoughts and full support go out to Kristoffer and his family."
Olsson, who has 47 caps for his country, signed for Arsenal at the age of 16 for a fee of around £200,000 in 2011.
He spent three years at the club, but was limited to one appearance in the League Cup in 2013.
He was loaned out to Midtjylland in 2014, before signing a permanent deal with the Danish club the following year.
After spells at AIK, Krasnodar and Anderlecht, Olsson returned for a second spell at Midtjylland, again initially signing on loan before making the move permanent last year.
He has played 13 games in the Danish Superliga this season.
Arsenal have responded to Midtjylland's statement, writing on X (Twitter): "Get well soon, Kristoffer. We wish you a full and speedy recovery."
Featured Image Credit: GettyTopics: Arsenal, Premier League, Football
Ryan Smart