Iceland, the smallest ever nation to feature at a European Championship, sent the Three Lions back home and Sagna claims their humiliating loss was a 'big slap in the face' for England.
France will go head-to-head with Lars Lagerback's courageous men on Sunday at the Stade de France for an anticipated UEFA Euro 2016 quarter-final clash.
Speaking at the pre-match press conference, the Manchester City full-back admitted England's departure from this top-flight tournament was a major upset.
"It's a shock, a shock for the country. A lot of people expected it to be France v England.
"They've got a big slap in the face. The criticism of the players is too much. They'll get a new coach and try to manage the pressure better.
"I thought England would win because they have a young team with plenty of talent. On the other hand, I was quite happy for Iceland because they played really well. They taught England a lesson and deserve to be where they are."
The 33-year-old footballer also believes Les Bleus can overcome the Icelandic lads to reach the semi-finals of the competition.
"We certainly do not underestimate Iceland, but we belong to the best sides in Europe, we're among the favourites, and we're at home.
"We have a status to live up to. When we see how the people in the fan zones celebrate when we score a goal, it warms our hearts. We just can't let them down.
"I'm not thinking about defeat. I'm not planning to go on holidays early. I want to go all the way."
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