The 27-year-old will sign for the Premier League champions on a four-year deal when his contract with Gijon expires at the end of this month.
Leicester are preparing for an exciting season ahead, which sees the Foxes embark on their very first Champions League campaign.
Defender will bolster squad
Claudio Ranieri’s side tried to capture the signature of Watford’s Troy Deeney, and will be looking to expand their squad with an extra competition in their 2016-17 schedule.
Hernandez is a product of the Real Madrid youth academy, with him making the move to Sporting Gijon in 2012, and he has experience playing under the pressure which will be applied on Leicester next season.
The Madrid-born defender was part of a relegation battle last season, in which he managed to help Sporting avoid the drop, and in that season he made 36 appearances.
Foxes looking for defensive reinforcements
Wes Morgan and Robert Huth have established themselves as Leicester’s first-choice centre-backs last season, and what a season they had, but Ranieri will be looking to bolster the defensive side of things this summer.
As well as other areas too, however, Ranieri insisted that the club would not be chasing big name signings, despite the Foxes putting in two bids for Deeney, which Watford rejected both times.
It was always going to happen, bigger clubs were going to come in for their star players, despite those players saying their loyalty is with the league champions.
Manager Arsene Wenger believes that Vardy will remain at the King Power Stadium, despite the Gunners showing the interest and desire in signing him.