The 60-year-old was far from successful at his last two clubs in Serie A, but feels it was more a matter of poor timing than his own shortcomings
The current Monaco boss was in charge of the Giallorossi between 2009 and 2011, before coaching the Nerazzurri from 2011 until 2012.
Ranieri left both clubs halfway through the season, though, following a string of poor results, and he believes it was a matter of wrong club at the wrong time on both occasions.
"I have coached a number of big clubs, but always at the wrong moment. I was there either too soon or too late," Ranieri stated to La Gazzetta dello Sport.
"No one even knew Valencia when I arrived in Spain, while Chelsea made a name for themselves after making the Champions League semi-finals.
"I took charge of Juventus when they came out of Serie B. Roma, however, were at the end their cycle when I coached them, as were Inter."
Ranieri's Monaco currently sit second in the Ligue 2 table with two wins and a draw after three games.