Tomiyasu has been fighting a muscle concern since showing on the World Cup with Japan and he missed the Gunners’ Boxing Day win over West Ham.
The appropriate-back has since returned to coaching, although, and is about to be in Arsenal’s squad for his or her journey to Brighton.
“He is getting closer and closer. He has been training with us, so he is available,” stated Arsenal supervisor Mikel Arteta.
Arsenal will, nonetheless, be with out Emile Smith Rowe (groin), Gabriel Jesus (knee) and Reiss Nelson (hamstring).
Of these, Smith Rowe is the closest to creating a return and may make his comeback early subsequent month.
“He has made some big steps in the last week or so, took part in a few training sessions lately and is looking good,” stated Arteta.
Arsenal doubtless XI: Ramsdale; White, Saliba, Gabriel, Zinchenko; Odegaard, Partey, Xhaka; Saka, Nketiah, Martinelli
Saturday 5.30pm GMT, Sky Sports activities
Venue: Amex Stadium
Referee: Anthony Taylor
Arsenal squad from: Hein, Ramsdale, Turner; Cedric, Gabriel, Holding, Saliba, Tierney, Tomiyasu, White, Zinchenko; Elneny, Lokonga, Odegaard, Partey, Saka, Vieira, Xhaka; Martinelli, Marquinhos and Nketiah.
Injured: Jesus (knee), Nelson (hamstring) Smith Rowe (groin)