Even though players like Illarramendi or Isco have been training with the team for the last month, Carlo Ancelotti is willing to start new signings Toni Kroos and James Rodríguez against Sevilla, according to As. It should be noted that James first appeared in Valdebebas on August 1st while Kroos has been with his teammates since August 5th.
Apparently, Cristiano Ronaldo is ready to start the match as well, so Ancelotti clearly wants to make a statement and win the UEFA Supercup with Real's biggest players on the pitch. Though there is one exception. Keylor Navas will not be defending Real Madrid's goal, despite Casillas is not in good shape after conceding three goals that could've been saved against Manchester United.
Sevilla have been training for a long time now and they will clearly have a physical edge over Real Madrid in terms of fitness. That's why it would be better to start Isco and Illarramendi in the midfield. Both of them completed all three friendlies in the United States and while they might not be ideal to start in a Champions League Final just yet, they should be ready enough to take on Sevilla. Ancelotti will not be able to rely on 12 or 13 players this season considering that Real Madrid will be participating in the FIFA Club World Cup next December. One of Ancelotti's goals should be to rotate his roster a bit more. And that's where Isco and Illarramendi become valuable.
All things considered, Ancelotti will likely deploy a 4-4-2 formation with Kroos and Modric pairing in the pivot, while James and Bale would be on the wings. The only problem about that formation is that it would rapidly turn into a 4-2-4, something that would harm Real Madrid's balance to contain Sevilla's counterattacks. This game was a good opportunity to see what Ancelotti can expect from Isco and Illarra given that Alonso is out with a suspension, but it seems that Real Madrid's two marquee signings of last summer will have to wait a bit longer to have a chance.