Arsenal have completed the signing of 26 year old France striker Alexandre Lacazette from Lyon for a club record £46.5m fee on a five-year deal.
"He has very interesting technical qualities and a strong character," said Gunners boss Arsene Wenger.
Wenger added: "We are very happy to have Alexandre join our group. He has shown over a number of years that he can score goals and that he is a very efficient finisher.
"So he is a guy who is a great addition for us, and someone who will help us challenge at the top level this season."