Union Berlin have strengthened their squad for next season by signing young forward Jamie Leweling from relegated Bundesliga rivals Greuther Fürth. Leweling, 21, is Union’s fourth capture for the coming term which will see them in the Europa League group phase after Fürth team-mate Paul Seguin, Janik Haberer and Danilho Doekhi. “I am pleased that we were able to convince Jamie of the prospects at Union and that he has decided in favour of us despite numerous other enquiries,” said Union’s chief of professional football Oliver Ruhnert. “With him, we get a technically and physically strong offen…