Breaking arsenal announce unai emery as new head coach

I think there may be some confusion here!

Unai Emery is actually the former head coach of Arsenal, not the new one. He was appointed as the manager of Arsenal in May 2018, but was sacked by the club in November 2019 after a poor run of results.

Since then, Mikel Arteta has been the head coach of Arsenal, having been appointed in December 2019. Arteta is still the current head coach of the club.

So, to clarify, there hasn't been an announcement from Arsenal about Unai Emery returning as their head coach.