Barcelona head coach Quique Setien wants his players to improve their displays despite beating Leganes 5-0 in the Copa del Rey last 16.
Lionel Messi registered a second-half brace after Les Bleus star Antoine Griezmann and Clement Lenglet gave the Blaugrana a two goal lead at half-time.
Arthur, who came off the bench, also found the net to help Barca seal a spot in the quarter-finals of the competition.
Setien said in his post-match interview: “We have done many things well, but I am not happy at all because we lost control of the game in the final stretch of the first half.
“We have done very well for the first 20 to 25 minutes, we have been precise and we have had control.
“It is true that they could have hurt us and that they have reached us.
“Do not see I am completely satisfied because we have lost control at some points in the game, especially at the end of the first half.”