Last week, Costa missed the first round of the Europa League Cup because of injury. He will be able to play well tonight. In the three seasons of Chelseas performance, Costa has always had a remarkable performance against Arsenal. We know Arsenal do not like rough confrontation, and Costa is an expert in this field. He did well in Chelsea. Arsenal in the first round of home games in the 11 dozen 10 situation and Atletico Madrid war became 1-1 tie, this time away from home battle is very few.