The Ireland manager was in charge of Leicester for five years
Until Claudio Ranieri's arrival at Leicester City, Martin O'Neill would have been seen as the club's most successful manager.
The current Republic of Ireland manager led the team to two League Cup wins in 1997 and 2000. Before Ranieri became Leicester City manager, O'Neill was linked with the job, and he has been since linked with the position since the Italian was sacked earlier this week.
Despite Leicester being a 1-0 win away from the Champions League quarter-finals, O'Neill has confirmed he has no interest in the job. Speaking to BBC Radio 5 Live on Sunday morning, the Derry native said he "enjoying the job [with Ireland] at this moment.
O'Neill's team have started their qualification campaign for the 2018 World Cup excellently, winning three of the first four games, and drawing the other away to Serbia. The team are two points clear at the top of Group D, and four points clear of their next opponents Wales.
A job-sharing scenario is something that did not appeal to O'Neill claiming he would be doing a disservice to both teams. "If somebody was trying to do two jobs at same time there would be problems if you didn't get results on both sides."
O'Neill spent five seasons at Leicester. He felt Ranieri had the right to guide the team away from relegation trouble after winning the title last season.
"Only two months ago I voted for him as FIFA Manager of Year and he has that right to do it. There's pressure on, I know teams have to win matches. I know how important financially the Premier League is, Leicester aren't the only team losing matches."
Former Leicester City manager Nigel Pearson is the favourite to succeed Ranieri.