One game and one goal, everyone is now singing Dani Olmo's praise. Barca fans are now seeing him as the right choice. I remember the second return of Romelu Lukaku to Chelsea. His debut game was against Arsenal, and he put up a spectacular performance and scored a goal. He helped Chelsea beat Arsenal after three consecutive defeats. All Chelsea fans believed that the new record-breaking signing was the solution to the club's attacking woes. But their hope was dashed after a few games because he became a liability. Dani is a fantastic player but he needs to be consistent to become an asset to Barca. I wish him all the best.
Excuse me but there are some players began their career in a new big clubs with many good performances, goals and positive thinking from community but at the end, they failed at those clubs and had to leave in massive disappointment.
I bring two examples: Adrian Mutu at Chelsea and Alvaro Morata at Chelsea too. You can Google to see how they perform at Chelsea in early matches and in general before they were sold to other clubs.
Olmo is only an attacking player and his expected contribution for Barcelona is for operation of their attacking system from ball possession to key passes and assists. Goals are very last expected contribution from Olmo and here he only played one match for Barcelona so far. It's too soon to conclude about his adaptability and success in Barcelona, wait for some more months.