Rangers booked their place in the Europa League group stages following a last-gasp 1-0 victory against Legia Warsaw at Ibrox on Thursday night.
Alfredo Morelos’ 90th-minute winner made all the difference and proved crucial after the Light Blues were held to a goalless draw in last week’s first-leg in Poland.
Celtic legend Artur Boruc would have been disappointed to see his boyhood club crash out of the competition at such a stage and against his former rivals.
The Bournemouth goalkeeper was at Ibrox to support Warsaw, and he was pictured leading the chants at the away end against Rangers.