Sebastien Haller has taken over the number 9 shirt from Erling Haaland at Borussia Dortmund and hopes that his goals will help the German top club win trophies. “We’ll hopefully achieve great things together in the next few years and be able to celebrate together too,” the 28-year-old said. Sports director Sebastian Kehl said: “During the talks with us, he made it clear that he has big ambitions with BVB.” Ivory Coast striker Haller was to join his new team on the weekend for pre-season training, after Dortmund announced Wednesday he had completed a move from Dutch champions Ajax Amsterdam by …