Koeman is said to be under pressure after defeat in midweek to Champions League opponents Juventus.
However, with a place in the final 16 now locked in, Koeman isn't panicking.
That's according to journalist Lluís Canut, who is close to the Barca coach. He said on El Partidazo de COPE: "He is optimistic, he does not lose his tone or hope.
"Ronald does not understand the disappointment of the fans because the team is in the second round.
"He is not angry with the players."