Mancini tempted by Nigeria job
"I was asked about my willingness to take over in an unofficial way and I said I was willing because the prospect of an African Nations Cup and a World Cup appeal to me," Mancini told Friday's La Gazzetta dello Sport.
"Nigeria is rich with excellent players who are not well known. If they really want me, I'll sit down and negotiate."
There has been speculation that Nigeria could hire a foreign coach after qualifying for next year's World Cup in less than convincing fashion under current boss Shaibu Amodu.
Mancini has not worked since being sacked by Inter in May 2008 after leading them to a third consecutive Serie A title.
He said that he opted to take a year off after being fired, adding that "since July the decision to rest has no longer been mine".
He also said he would be interested in the Italy job if Marcello Lippi steps down after the World Cup.