Arsenal's manager has voiced fears that his team's chase for titles this season is being threatened by a concerning cycle of injuries and a grueling schedule.
Key midfielder Declan Rice missed the Champions League trip to face Club Brugge due to illness. Meanwhile, forward Leandro Trossard and defender William Saliba are still on the sidelines.
There was, however, positive news regarding Gabriel Jesus, with the South American striker registered to their Champions League squad. He replaces the hurt youngster Max Dowman, who picked up an ankle injury.
"Practice, no because we don't have time to train. But clearly the fact that you are without players, you are loading other players more, there's a knock-on effect to that and it's a truly vicious circle."
Dowman's setback is the most recent in a extensive series of fitness problems for the North London side. Since the start of last season, they have suffered 95 injuries, the second-highest total in the English top flight.
Arteta rejected the idea that practice intensity were to culprit, pointing to a shortage of time for drills. He emphasized the strain on fit players, some of whom have played over 150 games in two years.
Even after a major summer spend exceeding £250 million, Arteta insisted the club is not planning to enter the winter transfer market.
"Right now we're just concentrating on getting the players back and with luck it will be a matter of weeks," he commented. "We know how crucial those weeks are going to be."
The team experienced their initial defeat in 18 matches at the weekend, reducing their lead at the summit of the league to two points.
Attention now shifts to the European stage, where a sixth consecutive group victory would virtually guarantee a knockout phase place. Forward Gabriel Martinelli could create history by finding the net in a fifth successive European fixture.
"We are frustrated with the outcome, but we have to move forward," Martinelli stated. "It's not like everything is going wrong because we lost one game. So we remain united."
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