Adams handed the centre-back his senior debut as a 17-year-old at Sheffield United in 2011. The Englishman then starred at Hull City for three seasons before securing a £12m move to the King Power Stadium last summer.
The 24-year-old is said to have impressed Pep Guardiola, as reported by the Mirror, with his comfortability on the ball, a trait the Premier League winning manager requires from his defenders. Despite Nicolas Otamendi's inclusion in the PFA Team of the Year, the Argentine can struggle at times with his distribution and Guardiola wants to shore up the position ahead of next season's title defence.
But Adams, who won promotion to the top-flight with Leicester in 2003, believes Maguire should prioritise playing regularly over a more lucrative contract.
"Thats the problem with joining a massive club like that, I would never advise against it because, although he's a wealthy boy now, I'm sure he'd be wealthier if he joined Man City," Adams told Tribalfootball.
"But for me, money's not everything. It's a side issue. The boys in the Prem, they're multi-millionaires anyway. What I would think is, I would want to play football every week."
Fast forward seven years and Maguire is now a fully fledged England international. Three Lions boss Gareth Southgate handed Maguire his first cap last August and he has gone on to make three more appearances for his country.
Maguire's name is likely to be included in Southgate's final squad for Russia, but Adams admits he never envisaged Maguire reaching such lofty heights.
He added: "I could see his potential, [but] I never thought he'd be an international player.
"I gave him his debut at 17. He was still an apprentice [and] he was bigger and stronger than the kids he was playing against at that age, but you know the one thing he had was the ability to handle the ball and come out and play from the back even at that age. He's done really well."
You can read about Micky Adam's amazing life and career in his biography, Micky Adams: My Life in Football, which can be bought by clicking on this link - bitebackpublishing.com/books/micky-adams