Hi man!
In the same route, you have found that pokeball there is a girl. Pokeball belongs to that girl, and you have to first talk and then go to pokeball and give it back to her.
I want to buy these: Talonflame(gale wings atleast 28atk and nature+speed 30), Abra/Alakazam, Pineco/Forretree, Heracross, Dragonite, Khangaskan, Skarmory , Azumarill(huge power), Ferroseed/Ferrothorn. Paying well
Pm me ingame or leave offert here