Granit Xhaka has reached an agreement with Hertha Berlin and informed Arsenal he wants to join the Bundesliga club, according to the player's agent.
Xhaka's future at Emirates Stadium has been in doubt since the midfielder reacted angrily to being replaced during the 2-2 draw with Crystal Palace in October.
The former Borussia Monchengladbach star cupped his ears to the home fans, who mockingly cheered his substitution during the Premier League fixture, then removed his shirt before walking straight down the tunnel.
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After being stripped of the captaincy by former boss Unai Emery, a January exit appeared likely.