Celtic offered Fabian Rieder boost by Bundesliga club

Despite the rumours of record-breaking signings this summer, Celtic have not made any such moves till now. Instead, they have brought in Odin Thiago Holm from Valerenga, Marco Tilio from Melbourne City FC, Yang Hyun-jun from Gangwon FC, Kwon Hyeok-kyu from Busan IPark and Maik Nawrocki from Legia Warsaw...