Declan Rice will miss Arsenal's crunch Premier League match-up against Aston Villa on Tuesday night.
The England international was not pictured in training on Monday, sparking fears he may have picked up an injury issue.
It's understood Rice picked up a knee problem during his impressive shift as a makeshift right-back in Saturday's narrow 2-1 victory over Brighton.
And while Rice was pictured arriving with the Arsenal squad at their team hotel in London on Tuesday afternoon, he was not risked tonight against Villa.
Arsenal are already nursing a number of separate injury issues and there were notable doubts over the availability of key defenders Jurrien Timber and Riccardo Calafiori, respectively.
Timber was spotted arriving with the squad and he will feature at right-back against Villa after sitting out of last weekend's triumph over the Seagulls.
Meanwhile, Rice's knock is not thought to be a serious injury but there is concern it would represent a risk to play him against Villa despite the importance of the contest.
Italian left-back Calafiori was set to start against Brighton but he felt discomfort in the warm-up and withdrew from the starting XI.
The former Bologna starlet was replaced by Myles Lewis-Skelly, who also missed out against Villa with Gabriel returning to partner William Saliba at centre-back.
There is good news though because Ben White, absent since straining his hamstring in the 2-1 win over Wolves earlier this month, was too pictured arriving with the squad at their hotel this afternoon.
White's return is a welcome boost as he's only spent two-and-a-half weeks on the sidelines.
Initially, the former Brighton defender had been projected to miss at least four weeks of action with the muscular problem but White has seemingly healed well. Arsenal confirmed on Tuesday night that White was fit enough to make the bench.
Kai Havertz is also part of his first match-day squad since the opening day of the season when Arsenal ran out 1-0 winners over Manchester United at Old Trafford.
