The 66-year-old managed England for five years and guided them to two quarter-final appearances in the tournament, but was criticised for some sub-standard performances in those competitions.
Football Association chairman Greg Dyke announced that Roy Hodgson would remain as boss despite the Three Lions' failure in Brazil, and Eriksson is adamant that a foreigner would not be granted the same leeway.
"I know for sure, if that had been me, I would have been sacked at once," he told The Telegraph.
"If he were foreign, he would be sacked. I'm quite sure about that."
England face Costa Rica in their final World Cup game on Tuesday.