Official news, Australian international Matt Ryan joined Arsenal on loan, and the player will wear the Gunners' No. 33 shirt.
The official announcement: "Australian goalkeeper Matt Ryan joined on loan from Brighton until the end of the season. The 28-year-old Australian international moved to Brighton in 2017 and has since made 124 appearances. Matt made 59 appearances for the Australian national team, playing in the 2014 and 2018 World Cups, as well as the 2015 and 2019 Asian Cups. He won the title of Best Goalkeeper at the 2015 Asian Cup in China.
Matt will wear the number 33 shirt. Welcome Matt! ”
Arteta said: "We already know Matthew Ryan very well through his performances at Brighton in recent seasons, he has a lot of Premier League experience and we welcome Matthew Ryan to Arsenal and look forward to working with him this season. ”