"1 million for patino, f*cking embarrassing," wrote @boulton_luka on X.
@Ashm__14 added: "£1m is an absolute joke. We are so bad at this."
Meanwhile, a confused @AhiweIkenna asked: "1m, is this a prank or something?"
"We really suck at selling players. City, Liverpool, and Chelsea would all have gotten 15-20m for him," wrote @julius_kamwathi.
@Gunners14title said: "Terrible deal and terrible treatment from the club to the player."