Outgoing Croatia coach Slaven Bilic said Spain are becoming increasingly vulnerable at Euro 2012.
In a formation reminiscent of Barcelona under Pep Guardiola, Del Bosque has decided to play with a false nine, predominately either Cesc Fabregas or Andres Iniesta to little avail.
Spain managed to win Group C regardless, although lacking conviction compared to previous tournaments, as they struggled against both Italy and Croatia.
“People are going crazy about Spain, but the world moves so fast that we forget the detail,” Bilic said.
“They have looked vulnerable, not only against us but also against Italy.
“For me, it is easier to defend against Spain when they are playing without (Fernando) Torres, (Alvaro) Negredo or (Fernando) Llorente.
“To me, they are more dangerous when they play with a striker. Why? Because when they don’t have someone in the box, they lack depth.
“When you play against Torres, you can’t push up. They can’t stretch you without a striker.
“I am not sure if they are missing David Villa, they have enough quality strikers on the bench. I would have preferred them to play without a striker against us because it makes it easier – you just have to protect the wings and it is much easier.”
After winning the group ahead of Italy, Spain will play France on Saturday for a place in the semi-final as Del Bosque’s side look to retain the trophy.
Bilic will take the coaching reins at Lokomotiv Moscow and will be succeeded by Igor Stimac at the Croatian national team.