The race for fourth place is heating up with just two games left for the Gunners, although they will secure Champions League qualification if they beat the Magpies as well as Everton on the Premier League final day.
Thursday’s disheartening derby loss to Tottenham left Mikel Arteta with a big headache at the back.
Kieran Tierney and Thomas Partey were already ruled out for the rest of the campaign and Rob Holding will join them on the sidelines this week after his red card at Spurs.
White was named on the bench for the derby but did not feature while still on the comeback trail from a hamstring problem.
Gabriel was sent off against Tottenham after what Arteta feared was a muscle injury, with both players’ availability for Newcastle shrinking over time.
The manager said on Saturday: “We will probably know more tomorrow so we wanted to extend this period as much as possible to understand how they are recovering, how they are feeling, assess them and tomorrow we will probably know more about how they are doing. . .
“Tomorrow will be the day we get better answers, probably not the answers we want until game day, but hopefully better answers.”
Predicts Arsenal XI: Ramsdale; Cedric, White, Xhaka, Tomiyasu; Odegaard, Elneny, Smith Rowe; Saka, Nketiah, Martinelli.