Celtic’s former Polish goalkeeper Łukasz Załuska now works as the goalkeeper coach for Wisła Kraków, a team he played for after leaving Glasgow in 2015. Efrain Juarez wasn’t a Celtic player for too long, spending just two years at the club. Brown was partnered in midfield against Braga with Welshman Joe Ledley, who Celtic fans bonded with tremendously during his four seasons at Parkhead.