Arteta questioned the Frenchman's maturity after the incident and has exiled the midfielder from first-team training after he failed to impress during a meeting with him and and technical director Edu.
Coutinho's future at the Camp Nou seems doubtful, having spent the 2019/2020 season on loan at Bundesliga champions Bayern Munich.
Coutinho completed a mouth watering £140m move from Premier League champions Liverpool in January 2018 but has struggled ever since the transfer, failing to blend in at Barcelona.
Arsenal are interested in signing the Sevilla defender Diego Carlos.
This swap deal would see Guendouzi and £9m go to Barcelona, with Coutinho coming to Arsenal in return in a permanent deal. Arteta is planning to rebuild the squad but admitted he is concerned about a potential lack of funds this summer. That is the challenge'.