Costa was responsible for coach Sergio Conukicao after their 2-0 win against Monza for the last match of Rossoneri of the season.
“For Milan, the players and the fans, the goal must always be first,” Costa told Dazn, who was able to do the suspended Conukicao.
“We can start talking about the season tomorrow and why we ended this position, but for tonight we have to talk about this game.”
He also said: “This is a team full of players, they each have their own personalities, so it's like a family, you have to get to know and understand each other.
“But when it comes to tonight's game, the start was slow, we did better after the restart with more intensity and are satisfied with the result. For the rest, we can talk tomorrow.”