The Spaniard joined the Premier League champions earlier this summer and is determined to force his way into the first team picture.
Hernandez hopes to prove he is worthy of a first team place at Leicester
The 27-year-old has signed a four-year deal with the Foxes after leaving Sporting Gijon on a free transfer at the end of June.
The central defender arrives with a strong reputation, having graduated from the Real Madrid youth academy before joining Sporting in 2012, where he played a crucial part in helping the club beat relegation from La Liga by a single point.
But Hernandez insists he is not taking anything for granted in the Premier League and is well aware that he faces a real fight to establish himself as a first team regular at the King Power Stadium, particularly given the impressive form of centre-back partners Wes Morgan and Robert Huth last season.
He told the Leicester Mercury: "I know it will be tough to get into the team because all across the team, in every position, they are good players.
"They are the Premier League champions so it won't be easy for a new player. This a great opportunity for me and I want to do well.
"I watched last season and it was amazing but this is not a mirror. Little by little the club is growing. Last season they had really good players, a good manager and the supporters are right behind the team. Little by little they are growing every day."
The Madrid native has already had two run-outs for his new club during the pre-season period, and is set to play a part during City's friendly with Paris Saint-Germain at the StubHub Center in Carson, Los Angeles on Saturday.