Mikel Arteta suggested it is still too early to determine whether Sunday's north London derby with Tottenham will be able to go ahead as planned.
Arsenal were without nine first-team players for their goalless EFL Cup semi-final first-leg draw with Liverpool on Thursday.
They had four players away on international duty at the Africa Cup of Nations, another four injured and Martin Odegaard tested positive for COVID-19 prior to the game.
But despite the club having only one known coronavirus case prior to Friday's testing, there appears to be a real danger of the clash being postponed.
Media reports claim the club have not yet submitted a request to the Premier League for the fixture to be called off, but it would seem they only need a few more players to become unavailable for a postponement to be likely.
In order for the encounter to not go ahead, Arsenal will need to prove they do not have 13 eligible outfield players and a goalkeeper among their first-team squad or "appropriately experienced Under-21 players", and Arteta suggested Thursday's game did bring further fitness problems.
Speaking on Friday, Arteta said: "We had concerns already before the match against Liverpool, and after the game we had some more issues.
"We haven't been able to assess the squad yet because we couldn't fly last night, so we just arrived to the training ground and all the boys are being looked after. So we don't know."
Centre-backs Ben White and Gabriel Magalhaes were two of those able to play the full 90 minutes on Thursday, and both have been praised for their performances this season.
Since the former's pre-season arrival from Brighton and Hove Albion, the defenders have formed a good understanding at the heart of the Gunners' defence.
They have started 18 games together this season across all competitions, with Arsenal losing just four of those and winning 11 (61.1 per cent).
Arsenal have suffered as many defeats from matches in which one of them has not started, despite there being only eight games that qualify in that regard.
From those matches in question, Arsenal's win rate drops to 50 per cent, while their average goals conceded per 90 minutes increases to 1.4 from 0.9.
After a somewhat shaky start, White appears to have settled and Arteta can already see a strong partnership forming, with the Spaniard praising him for being one of those to stand up the challenge posed by facing Liverpool a man light for much of the match following Granit Xhaka's red card.
"He is one of them that I would certainly apply the words that I've just mentioned to his performance," Arteta continued.
"He's not Tony [Adams] and he cannot be Tony. He's just moved to our club and he's just been here just for a few months, but he has something and he wants to do it.
"He's very demanding with himself, he's really willing to learn and improve his game and he's in the right place.
"In terms of the qualities that I saw in [White] and what is required for us to try to recruit somebody like him with his qualities, it was clear [he could play with Gabriel].
"Then those personalities as well, that chemistry has to exist. We can see they really enjoy playing together, you can see that, that chemistry is there and that's a massive extra when you are looking to build something at the back."
Martino resigns as Inter Miami coach after early playoff exit
Gerardo Martino has resigned as Inter Miami's head coach due to personal reasons, the MLS side have confirmed.
The Argentine ends his 17-month stint in charge of the Herons following their MLS Cup exit just under a fortnight ago.
Martino, who oversaw Miami's Leagues Cup triumph soon after his arrival last season, guided the franchise to this year's Supporters' Shield with a regular-season record tally of 74 points.
However, they were eliminated by his former side Atlanta United in round one of the MLS Cup playoffs.
Miami opened their best-of-three series against Atlanta with a 2-1 win, only to lose by the same scoreline in Game 2 before falling to a dramatic 3-2 defeat in the decider.
“It has been an honour to work at such a special club, and to lead such a special team," Martino said.
"I’ve enjoyed my stay at Inter Miami and will treasure the memories made and relationships forged here for the rest of my life.
"I depart with nothing but gratitude for my time here and would like to offer sincere thanks to everyone that made it possible."
Fonseca: Milan have 'respect' but 'are not afraid' of Juventus
Paulo Fonseca said Milan have plenty of "respect" for Juventus, but his side "are not afraid" of their rivals ahead of their Serie A clash on Saturday.
After a slow start to the season, Milan are six points adrift of Juventus in the table, but only a place behind them, as they aim to make up the ground on the top six.
The Rossoneri have played a game less than Thiago Motta's side, and could catapult themselves back into the Scudetto picture with a win this weekend.
Milan return to the San Siro for the first time since a 2-0 defeat to Napoli at the end of October, and could register two consecutive home defeats in Serie A for the first time since between October and November in 2023.
"It is not decisive, but it is important, like all of them," Fonseca told reporters ahead of Saturday's game.
"I can't say that the game against Juve is more important than the next one against Empoli because we need consecutive victories.
"It's a different game, but I always think positively. We are Milan, we have a lot of respect for the 'Bianconeri', but we are not afraid. We are here ready to win."
A boost for Milan is that Juventus will be without top scorer Dusan Vlahovic for Saturday's clash after returning from international duty with a muscle problem.
Despite the Serbian's absence, Fonseca was aware of the danger his probable replacement, Timothy Weah, would pose, having managed him during his time at Lille.
"Juve knows how to adapt very well. I don't know if Weah will play," Fonseca said.
"Weah is very fast and attacks deep, not like Vlahovic. It will not be the same thing of course.
"We will have to pay attention to movements in depth and less to support work, because he is a player who does less of this job."
While Fonseca has endured a stuttering start to his tenure at the San Siro, Milan have shown they have the ability to match the very best.
They beat rivals Inter in October before stunning Real Madrid at the Bernabeu in their last Champions League encounter, keeping their play-off hopes alive.
"I believe it's a matter of motivation and not pressure," Fonseca said.
"Against Inter, Juve and Real it is easy to be motivated, it's more difficult to go to Cagliari and have the same motivation.
"Pressure is always with us, every day. If we don't want to have pressure, then we shouldn't be here."
'Right guy at the right time' - Amorim confident of changing Man Utd's fortunes
Ruben Amorim believes he is the "right guy at the right time" to turn Manchester United's fortunes around.
The 39-year-old signed a two-and-a-half-year deal earlier this month to keep him at Old Trafford until June 2027, replacing Erik ten Hag after he was sacked in October.
Amorim is the sixth permanent United manager since Alex Ferguson retired in 2013, having left Sporting CP to take charge during the international break.
He won two Primeira Liga titles as Sporting head coach as well as two Taca da Liga trophies, while he led the club to a perfect start in the league this season, winning all 11 of their games.
United sit 13th in the Premier League table ahead of their trip to Ipswich Town on 15 points, though they are just four points behind Chelsea in third.
Amorim recognised the size of the task ahead of him in Manchester but is confident he can make a change.
"I'm a little bit of a dreamer and I believe in myself, and I believe in the club," he said during his first press conference.
"I think we have the same idea, the same mindset and that can help.
"I truly believe in the players; I know you don't believe a lot, but I do. I want to try new things. You guys don't think it's possible, I do.
"Call me naive, but I believe I am the right guy at the right time. I truly believe I am the right guy."
Aged 39 years and 302 days, Amorim will be the youngest to take charge of his first match for the Red Devils since Wilf McGuinness in August 1969 (31y 288d).
United have won just four of their 11 league games so far this season, and have struggled in front of goal, netting just 12 times so far.
Expected to implement his favoured 3-4-3 formation, Amorim admitted it would take time for the club to adapt and has asked for patience as the players get used to his tactics.
"I know at Manchester United we have to win games. We need a lot of time because it's a tough league, we have to improve a lot to try to win the title," he added.
"We have to change the physical aspect of the team. I don't know how long it will take."
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