Utterly disgraceful, apart from anything else the language used is appalling.
Pathetic from the so called greatest fans in the world.
Pathetic is right. The guy has donated plenty to Celtic's charitable causes down the years, including royalties from his songs and IIRC he also contributed to the fundraiser for that Rangers fan who died in a supporters bus crash a few years back. There's no doubting his love for Celtic and so effing what if he congratulated Johnson? Some of the sectarian bile the Green Brigade come out with is far more worthy of scorn.