Watch: Rod Stewart goes in hard on former Man United legend Roy Keane

Roy Keane was one of the most fearless and fearsome players that Manchester United have ever had.

A midfield general par excellence, he was rarely outmuscled in the heat of battle and was the engine room of the United side that won everything under Sir Alex Ferguson.

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As a player, he was without compare, but as a pundit, he’s an acquired taste. His opinions don’t always chime with viewers.

Rock and pop legend, Sir Rod Stewart, really isn’t a fan, and has even gone as far as calling him a bully.

Speaking to Jim White and Simon Jordan on talkSPORT, the Celtic-supporting Stewart didn’t hold back.