La Roja suffered a surprise 2-0 defeat to Scotland in their second match in Group A, which led to a host of criticism of the team and the new manager, but four straight wins have since followed.
Spain beat Scotland 2-0 in Seville last week, which left them needing just one more win to advance to the finals of the European Championship.
Gavi came up with the only goal of the match in Sunday's contest with Norway, and La Roja have now qualified for Euro 2024 with two games to spare.
Spain's campaign will finish in November against Cyprus and Georgia, and De la Fuente will have the chance to experiment with his squad.
«I know Spanish football and the players who can adapt during the game together. We will continue to trust in those footballers, of whom there are many. It is a reason for joy to have so many to choose from,» UEFA.com quotes De la Fuente as saying.
«We very happy because the team has grown a lot and has a great future. You can imagine the dressing room party. We have worked to get to this moment.
'I always say that learning is constant. You learn from both the good and the bad. We have room for improvement because the demands and challenges are greater every day.
»We will see what level we are at when the EURO arrives. I am tremendously optimistic and we will fight to be at the top. There is room for improvement and the challenges and demands are increasing.
«We deserve it. The team has grown a lot and is a team for the future. This was one of the most complete matches we have played, with a lot of maturity. Football brings you up one day and down
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