Leno joined the Gunners from German side Bayer Leverkusen last summer in a deal worth £22.5million.
The 27-year-old has since established himself as Arsenals first-choice shot-stopper ahead of Premier League legend Petr Cech.
Leno was named Arsenals Player of the Month for March after impressing against Tottenham and Manchester United.
And the Germany international has opened up on the differences between the Premier League and the Bundesliga, telling Arsenals official website: Its difficult to go to another country and another league.
The Premier League is completely different to the Champions League and Bundesliga.
Everything is stronger but we analysed everything so I could get used to it. After a few weeks I was familiar with the football.
The biggest challenge is that every game is so difficult for 95 minutes. In the Bundesliga, if youre 2-0 or 3-0 up then the game is over.
But in the PL, when youre 2-0 or 3-0 up the game is still alive for the opposition. The speed of the game is higher than everywhere and thats the reason why its the best league in the world.
Coupled with that, the life of a goalkeeper is not easy. One day you are good, one day you are very bad.
But you have to be very strong in your head and mind. This pushes every goalkeeper and keeps them focused at all times.
Leno also thanked Arsenals fans for their support this season, adding: Each player wants to have good support from the fans.
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