Barcelona coach Ronald Koeman admits they need to move on from Lionel Messi's departure.
Messi left Barca after 21 years this week to sign with PSG.
Koeman told ESPN: "We have to understand that there is always an end for a player. You have to close the book because now we have to focus on this new season.
"We have new players and we have to move on, and we have time for that. We have young players in the squad this season, and it is also for the future, we are working on the future of this club, and it is really important to focus on this and not focus on what happened in the last days.
"I knew there was a difficult situation between the club, Leo Messi and LaLiga to have the chances of keeping the player at the club. It takes a long time, but I was also surprised by the day and the moment when I knew that he had finished playing for Barcelona. And I knew that the club's financial situation made it more difficult.
"I think it was difficult because we are not talking about just any player, we are talking about Leo Messi, the best player in the world for many seasons and we were all disappointed that he will not play for us this season.
"But, you have to change fast because you can't stay in disappointment with the start of the season, you have to understand that for a few days it was a difficult situation. Messi meant a lot to this club. "