PHOTO: Alf-Inge Haaland compares Roy Keane to Saddam Hussein after book revelation

Few football supporters will remember the name Alf-Inge Haaland, until you place it beside Roy Keane and the words "horror-tackle".

This week, the football world was reminded once again about the hostile history when Keane released his second autobiography, The Second Half.

The former Manchester United captain made sure to clear the air about his feelings towards Haaland, saying, "There are things I regret in my life and he (Haaland) is not one of them."

Here's how Haaland responded on Monday:

The tweet has since been deleted, but Haaland threw another shot at Keane and United supporters on Tuesday.

"Sorry for deleting my tweet last night. I had to. SH's family did not want to be associated with your [United supporters] former leader."

The pair clashed on multiple occasions during their years in the Premier League, with the feud escalating in 1997 when Keane injured his anterior cruciate ligament during a play when he purposely tried to foul Haaland.

As Keane was writhing in pain on the ground, Haaland hovered over him and accused him of faking the injury to avoid punishment from the official. Keane ended up missing almost a year.

Keane never forgot the incident, and four years later he got his revenge in the most cynical manor when he and Haaland battled on the pitch once again during the Manchester derby between United and Manchester City.

During a play in which Haaland had possession of the ball, the United captain followed through with one of the most violent tackles seen in football when he went in studs up, striking the Norwegians leg and ending his career.