The bad news about the new player of Barcelona, Dani Olmo is he is going to be absent in the first game of this season. According to some sources, Barcelona said he registered his contract and he doesn't have any problem playing for Barcelona in the game they are going to have against Valencia. But Dani Olmo's contract is not registered yet and on the other hand, Flick prefers to use Dani Olmo when he's in the good form.
I don't think that should be any serious issue for Barcelona because Olmo will not be playing their first match, we still have a lot of matches till the end of the season in which Olmo will play and display hi s quality skills and contributions for the victory of Barcelona over the clubs that they will be playing with.Missing the first match and some few matches will not be the reason why Barcelona performance will not be superb because initially Barcelona was playing without him and they were doing fine. He is now in Barcelona is the most important thing because that was what they wanted.