Speaking upon the announcement of the deal, Caldentey said: "I’m so happy to be here. This is the right time for a new challenge for me and Arsenal is the perfect place. I think what Arsenal are doing as a club is amazing – on and off the pitch. I love the way we want to play as a team and I think there’s a strong mentality building here. It’s been incredible to see what the club has done away from the pitch, with supporters following the team everywhere and lots of records being broken. I can’t wait to get started and help the team win trophies and entertain our supporters."
Head coach Jonas Eidevall added: "Mariona is a world-class forward and we are delighted to bring her to Arsenal. She’s a winner with proven experience of excelling on the biggest stage, which is exactly where we aim to be at this club. We believe Mariona will be a superb addition to our squad here at Arsenal, as we prepare for an exciting new season together."