Jose Mourinho took a not-so-subtle swipe at Mikel Arteta back in 2019 after the novice was handed the reins at Arsenal.
Mourinho was the Tottenham boss at the time and couldn't understand how Arteta - who had never managed before and had only worked as Pep Guardiola's assistant at Manchester City - had landed the coveted job.
Carlo Ancelotti was in the running for the Gunners job shortly after Unai Emery was sacked and many expected the now Real Madrid manager to be named the Emirates boss. But Arsenal overlooked the experience Italian and instead gave their former captain a chance - a decision that is now starting to pay dividends.