Adeyemi has joined the LaLiga champions as part of a €30M overall transfer package from Bundesliga giants Borussia Dortmund and he links up with his old national team boss Flick in Catalonia.
The 24-year-old ended the 2025/26 campaign with 10 goals scored in Dortmund, primarily operating out wide, so he will not be a direct replacement for the departed Robert Lewandowski.
Flick's current attacking options are well stocked with Raphinha, Roony Bardghji, Lamine Yamal, Ferran Torres and new €80M summer arrival Anthony Gordon.
Lamine Yamal and Torres might not be match fit in time for Barcelona's first game of the 2026/27 LaLiga season against Elche on August 23rd, and Adeyemi is ready to grab his chance if given to him by Flick.
"I hope Flick sees things in me that I can contribute to the team. He knows me very well from the national team and we're very close.
"I'm not afraid of competing for a place with Lamine Yamal or anyone else; if I'm at my best, I'll play."