Arsenal officially signed Blues winger Maduaike, who will get the Gunners' No. 20 jersey.
Arsenal coach Arteta said of the signing: "We are very happy to welcome Noni Maduaike to the team. Noni is an exciting young player and full of energy. His performance and statistics have been at a high level in recent seasons. Noni is one of the most talented wingers in the Premier League.
"Although only 23 years old, Noni not only has rich club and international competition experience, but also is very familiar with the Premier League. In recent seasons, we have witnessed Noni's excellent performance close to the front and we are very excited about his joining.
"Noni will join Arsenal's team with his teammates in England and other familiar players, and he will immediately feel the warmth of home. Noni's arrival will greatly enhance our roster strength, and everyone is very happy that he has been here. On behalf of everyone in the team, I welcome Noni and his family."
