Mikel Arteta's coaching career at Manchester City got off to a winning start as the Citizens beat Sunderland 2-1 at Eastlands on Saturday.
A late own goal from Paddy McNair sealed victory for City, whose first-half lead through Sergio Aguero was cancelled out by Jermain Defoe earlier.
After the match, Arteta was photographed embracing manager Pep Guardiola in celebration of the late victory - an image that won't sit well with Arsenal fans.
The 34-year-old quit Arsenal and indeed football at the end of last season after injury forced him to endure a less-than-prolific couple of years with the Gunners.
But it was reported by The Mirror that Arsenal had offered the Spain midfielder - who joined the North Londoners in 2011 - a coaching role with the club.
However, Arteta seemingly snubbed that offer to take a similar position at City, working under his former Barcelona team-mate Guardiola.
The decision did not go down well with Arsenal fans, many of whom posted dozens of snake emojis on Arteta's Instagram posts after he erased his Gunners-related images.
Supporters of the North London side will be bitter to see one of their own cosying up to the enemy, with City undoubtedly one of Arsenal's Premier League title rivals.
Arsene Wenger's side kick off their season by hosting Liverpool at the Emirates tonight.