The Ivorian international captain commented that there are “only a few details to sort out” after the parties’ negotiations throughout last month.
Several top clubs including Manchester City, Spurs and Paris Saint-Germain had been interested, but the 24-year-old stated that Emirates was his favoured destination.
“I’m glad to have taken a route through the French league but now I will go to London,” he told France Football magazine.
“I chose Arsenal because it’s a young group within which I will be able to fit in easily. I can develop myself over there.”
The striker helped Lille to a Ligue 1 and Coup de France double last season, scoring 15 goals.