Gabriel Magalhaes was forced to come off during Arsenal's clash against Olympiacos at the Emirates Stadium in the UEFA Champions League. David Raya appeared to land awkwardly on the 27-year-old defender after claiming a high-ball.
Medical staff raced onto the pitch shortly after the incident, and they eventually helped Gabriel to his feet. While the Brazil international was receiving treatment, Cristhian Mosquera was called to get ready to come on.
The 21-year-old defender, who joined Arsenal from Valencia for just £13m in the summer, replaced Gabriel, who sat himself on the bench. The Brazilian didn't appear to receive any further treatment after coming off.
Speaking to reporters ahead of the tie, Arteta was asked if his side are under pressure to go the distance in the Champions League this season. Last term, Paris Saint-Germain knocked the Gunners out of the competition in the semi-finals, winning 3-1 on aggregate.
This article contains affiliate links, we will receive a commission on any sales we generate from it. Learn more
The French giants went on to defeat Inter Milan at the Allianz Arena in Munich. The Arsenal boss said: "We have the same ambition which is to go game by game and try to be better than the opponent, which is very difficult in this competition and win as many games as we can.
"Tomorrow we're going to have a really difficult one. We know how important the home form is going to be to reach in this phase where we want to arrive and tomorrow we have the opportunity to start well."
Arteta made his debut as a manager on the European stage back in February 2020 when Arsenal locked horns with Olympiacos in the Europa League back. On facing the Greek champions again, the Spaniard said: "That's the beauty of football as well.
"I perfectly remember when we scored the goal, when we conceded the equaliser, the last chance that we had in the last second of the game as well to go through. What happened after that, as well, when COVID and everything hit, so it's part of the journey to get to where you are.
"It's a good example, like Willy [Saliba], to get where you want to get, sometimes you have to go through moments that you probably didn't expect to go through."
This is a developing news story that will be updated with relevant information as we get it. More to follow...
Join our Arsenal WhatsApp channel and get all the latest breaking news, opinion, podcasts and in-depth stories from football.london's dedicated Arsenal writers straight to your phone!
By following this free service you will be the first to know the news from the Emirates Stadium as it happens, when it happens.
To join our dedicated Arsenal channel, all you have to do is click this link and you can join thousands of others following our Gunners coverage!
If you're curious, you can check out our privacy policy here.