Madueke joined Chelsea from Dutch club PSV in January 2023. He has since worn the number 20 shirt for Arsenal, signing a long-term contract.
Arsenal manager Mikel Arteta said he is excited to have Madueke join the team. Arteta praised Madueke's skills and experience, saying he is one of the most talented wide forward players in the Premier League.
Reports suggest the transfer between the two London clubs cost Arsenal around 50 million pounds, a profit for Chelsea who signed Madueke two years ago.
Madueke thanked Chelsea fans on Instagram, saying he leaves with fond memories. He expressed gratitude to his teammates, manager Enzo Maresca, and the fans for their love and support.
Madueke played in five of Chelsea's seven Club World Cup matches in the United States, but did not feature in their 3-0 final win over Paris St Germain on Sunday.