Keane was sent off after swinging wildly at Shearer when Manchester United lost 4-3 in September 2001.
It is a moment he will be taunted about today by the home fans and Keane said: "It's something I wish hadn't happened - I reacted and got sent off. But it's not a defining moment in my life. I was disappointed. As much as I'd let myself down I let my team-mates down as well."