According to David Thiel, if young goalkeepers are to be well trained and prepared for the future, a goalkeeper coach must address the question of how the goalkeeping game will develop in the future and what game performance will be required of a goalkeeper at an early stage. In his opinion, those responsible must be able to recognize new development trends in the goalkeeping game at least three years in advance.
He then went on to explain what challenges David Thiel sees in the goalkeeping game of the future. Despite the above-mentioned percentages on the distribution of the goalkeeper's tasks in a match, he said, goalkeeping remains the most important focus in the training of goalkeepers. In addition, the goal is to further perfect the techniques and tactics of goal defense. The 2014 World Cup showed that all goalkeepers were technically far better trained than in previous times.
Another finding for him is that space defense is becoming increasingly important in goalkeeping. With more and more teams defending high, the goalkeeper has to fill that vacuum between the back line and the goal, he said. "The space is getting bigger," he noted. This additional task requires good anticipation skills as well as soccer skills in the goalkeeper, he added.
Due to increasingly better techniques of the field players and faster balls, there are more and more demanding crosses, especially in standard situations. Goalkeepers need to be prepared for this in training.
Above all, however, the quality of the player's opening actions will be of importance in the future. Increasingly, the goalkeeper is taking on the role of playmaker, as the opposing team's pressing often prevents the outfield players from opening up the game safely, and the goalkeeper is therefore increasingly sought out as an option. In order to be able to carry out these actions in a controlled manner, the goalkeeper needs good ball-playing skills and a good overview of the game.
In conclusion, David Thiel explained his theses with the help of vivid video scenes. He presented short video clips of game situations that supported his theoretical approaches and showed suitable solutions for goalkeepers in the respective game situation.