Celtic ended the window on a quiet note despite late speculation that more signings would arrive to bolster Brendan Rodgers’ squad depth. Nicolas Kuhn got the ball rolling mid-way through January, with the former Germany Under-20 international joining from Rapid Vienna for a fee of £3 million. On deadline day, Adam Idah became the only other arrival at Parkhead as he put pen to paper on a loan deal from Norwich City until the end of the season. Given the famed number nine jersey, the Republic of Ireland international will help to cover Kyogo Furuhashi and Hyeongyu Oh in the forward areas. It i…