The Japan worldwide was absent from the beginning XI for the goalless draw with Burnley on the Emirates Stadium on Sunday.
Tomiyasu, a £16million summer time signing from Bologna, has been an necessary member of the Gunners’ backline and has made 17 appearances within the Premier League this season.
However the 23-year-old seems set for a brief spell out of motion whereas he recovers from his damage, which Arteta didn’t elaborate on.
Arteta has been left with a depleted squad on account of accidents to Calum Chambers, Cedric Soares and Bernd Leno, along with Thomas Partey and Granit Xhaka’s suspensions.
Mohamed Elneny and Nicolas Pepe have additionally been away on worldwide obligation enjoying for Egypt and Ivory Coast respectively on the Africa Cup of Nations.
And now, the Gunners boss seems set to be left with out his first-choice right-back Tomiyasu after enjoying by way of the ache barrier in opposition to Liverpool within the Carabao Cup final week.
“Tomi had an damage and we didn’t have anyone to play in that place in opposition to Liverpool,” Arteta instructed reporters.
“He must recuperate and take care of himself, to attempt to be accessible as fast as he can.
“He can be out for a number of weeks.”
Dropping one other first-team common has left Arteta right down to the naked bones use and he was compelled to deploy Ben White as a makeshift right-back after in opposition to Burnley.
Chambers and Cedric would sometimes be relied upon to deputise, however the pair have lately been dominated out of motion in latest weeks.
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Chambers has been scuffling with a neck downside, whereas Cedric picked up a hip damage through the 2-0 Carabao Cup semi-final defeat to Liverpool.
Nonetheless, the Gunners boss can be relieved that Tomiyasu must be match sufficient to return to coaching in time for his or her subsequent Premier League conflict.
Arteta and his squad have jetted out to Dubai for heat climate coaching through the Premier League’s scheduled winter break which can give him the prospect to reset.
Arsenal are contending for a top-four end after recovering from a poor begin to the season, however the north London aspect are and not using a win of their final 5 matches in all competitions.
Their latest setback in opposition to relegation-threatened Burnley has allowed Manchester United to leapfrog them into fourth place within the Premier League after the Crimson Devils beat West Ham 1-0.
The Spaniard is hoping so as to add to his squad earlier than the switch deadline on January 31, with offers for Dusan Vlahovic and Arthur Melo reportedly within the pipeline.
However Arteta admits will probably be troublesome to get the offers over the road in time with every week to go till the winter switch window closes.
“It was what we deliberate however the market is troublesome and complex,” he mentioned.
“We knew that, nevertheless it’s quite a bit to handle. Now we have to make the fitting choices with gamers we consider are going to essentially assist us and attempt to convey those that may take us to the subsequent stage.
“We’re actually making an attempt, however whether or not we’re going to have the ability to do it, let’s have a look at.”