Arsenal new signing and their jersey number

You're referring to Arsenal's latest signing!

As of my knowledge cutoff, Arsenal's latest signing is:

Fabio Vieira (Midfielder) - Jersey Number: 21

Fabio Vieira is a Portuguese midfielder who joined Arsenal from Porto on July 4, 2022. He signed a long-term contract with the club and is expected to bring creativity and attacking flair to the team.

Please note that jersey numbers are subject to change, and I'll do my best to keep this information up-to-date. If you'd like to know more about Fabio Vieira or Arsenal's other signings, feel free to ask!