Spain coach Luis Aragones said he will field the substitutes in his side's World Cup final Group H game against Saudi Arabia on Friday. Spain have already secured their place in the second round and Aragones is willing to take the risk of resting key players in favor of the substitutes. "I'm going to make it difficult for myself by changing the team around," Aragones was quoted as saying by Sky Sports on Thursday. “Some coaches might prefer to play safe and choose the same team, but I'm not going to do that. Someone might play very well and I will risk criticism because he might not be chosen for the next game,” he added. Aragones is confident the second team players will show their worth when they are given the chance against the Saudis. “I'm giving an opportunity to the others to express themselves. All the players have great quality and I'm sure they are going to play well and win the game. I've got as much confidence in this team as the other one,” he said. Valencia keeper Santiago Canizares is set to start instead of Ilker Casillas, while Cesc Fabregas will play despite the yellow card he picked in Spain's 3-1 victory over Tunisia. “Goalkeeper is a very difficult position, but I have to listen to my conscience and Canizares will play. He is in great form at the moment,” Aragones said. "You have to take risks sometimes and Cesc is a very important player for us with the way he reads the game. In any case, I don't think he will pick up another card,” he added.