Roy Keane has conceded that he "managed badly" during his stint in charge of Ipswich Town.
The Irishman spent almost two years in the Portman Road hotseat before he was sacked in January 2011 following a string of poor results and disagreements with senior players.
Reflecting on his time in Suffolk, the 43-year-old wrote in his book The Second Half that he could have done a much better job.
"I don't think I'm a bad manager, but at Ipswich I managed badly. I spoke to some people like something on the bottom of my shoe," he said.
Ipswich won 28 of Keane's 81 games in charge of the club.