Emery unai welcomed as new arsenal boss
I think there may be some confusion here!
Emery Unai is actually the former manager of Arsenal Football Club, not the new one. He was appointed as the manager of Arsenal in May 2018 and left the club in November 2019.
The current manager of Arsenal is Mikel Arteta, who was appointed in December 2019. Arteta is a former player of the club and has been tasked with leading the team back to success after a difficult period.
So, to clarify, there hasn't been a new manager named Emery Unai welcomed as the new Arsenal boss.