Conversation so far:
When was the Alf-Inge Haland incident with Roy Keane?
The Alf-Inge Haland incident with Roy Keane was in 2001
What happened during the Alf-Inge Haland incident in 2001 with Roy Keane?
Roy Keane made headlines again in the 2001 Manchester derby, when five minutes from the final whistle, he was sent off for a blatant knee-high foul on Alf-Inge Håland

Question: How did the incident affect his career?
Self-contained rewrite: How did the Alf-Inge Haland incident where he was sent off for a blatant knee-high foul on Alf-Inge Håland affect Roy Keane's career?