The Foxes wrapped up the title with two games to go.
Garry Birtles believes that what Nottingham Forest achieved under Brian Clough is a greater achievement than Leicester City's Premier League title win, and admits that it is frustrating that Forest's accomplishments appear to have been disregarded in the wake of the Foxes' success, the Telegraph reports.
Claudio Ranieri's men clinched the league crown after Tottenham failed to beat Chelsea on Monday night. And with the side battling relegation until the final weeks of the season during the last campaign and having only been promoted to the top flight the year before, many are discussing whether their victory is one of the greatest upsets in sporting history.
But Birtles - who failed to make a league appearance during Forest's title-winning campaign of 1977-78, but would feature in the European Cup final victories in the next two years - suggested that while he is delighted for Leicester, he does not believe that it is on the same level as what Clough's men did.
"This isn't sour grapes from an ex-footballer, because Leicester have been absolutely fantastic and deserve it. I couldn't be happier because it's great for the East Midlands," he told the Telegraph.
"Yet I do feel our success at Forest is overlooked and it's been demeaning to the players in our team. We won what is now called the Premier League the year after we got promoted and then won the European Cup and League Cup the following season.
"For a Chelsea or Manchester United to do that now would be an achievement. I still see a lot of the Forest players from that time and while we're happy for Leicester, we do get annoyed that people tend to ignore something because it was nearly 40 years ago."
Though Leicester's one title win makes it difficult for them to be compared to Forest's great side, they have the opportunity to prove next season that they deserve to be put alongside them having qualified for the Champions League.
And given the strength of today's competition, a victory in that would undoubtedly go a long way in convincing Birtles of how great the Foxes' achievement actually is.