i dont think pekerman will have the time against germany to bring his guns later. in every match germany starts like storm and gain an early lead. with all the crowd behind them then it becomes very hard for opposition to comeback into the game.
moreover messi himself declared that he is fit enough for 90 min. this is a "make or break" situation and i hope perkerman realize this.
When The Going Gets Tough, The Tough Gets Going.