Baku, January 22, AZERTAC Brighton goalkeeper Mat Ryan has joined Arsenal on loan until the end of the season, according to Sky Sports. The 28-year-old Australian international had fallen out of favour at Brighton, losing his spot to Robert Sanchez after a 3-0 loss to Leicester in December."Signing for the club you grew up supporting as a kid," wrote Ryan on Twitter. "Buzzing to be beginning this new chapter and will give everything I've got to contribute to the first club I ever loved."