The 32-year-old picked up an achilles injury during the 6-0 Champions League win over Ludogorets last October.
Cazorla has had eight operations on his ankle since, and many Gunners fans feared this was the end of the road for him.
The Spain international was left out of Arsene Wenger’s 25-man Premier League squad and fans are now hoping for a January recovery to coincide with the transfer window.
And after he posted a video on his Instagram account with the caption “Training hard, pushing harder!” fans were quick to react.
One social media user wrote: "Going strong champ, we miss you Sir! Speedy recovery."
Another added: “Get well soon Santi. We really really love to see you play again."
Whereas one more critical fan said: "Train hard and come back to help this useless team."
The short clip shows the former Malaga star steadily working out on a cross trainer machine.
The Gunners have been scrambling along with Paris St-Germain, Real Madrid and Manchester City to sign 18-year-old Kylian Mbappe.
But in a recent Q&A session on French TV, Wenger revealed they could not afford the £165m price tag.
Arsenal have had a poor start this season and hit rock bottom with a 4-0 defeat at Liverpool over a week ago, piling the pressure on Wenger.
But chief executive Ivan Gazidis insists the club is in great shape.
