Not just bias, they’re in potential breach of the Bribery Act. If FSG want to get nasty, that’s the grenade to throw. Go back and check decisions made by referees that follow paid trips to the UAE that favour City. I bet there’s more than a couple.
The burden of proof is ‘does the organisation have ‘adequate procedures’. There’s a clear conflict of interest in letting them go to the UAE. I bet they’ve got nothing because they’re absolutely clueless.