A fantastic piece on a forgotten position in football. The Libero. The article below talks about the lost breed of hybrids between playmakers and center backs.
In essence, a single Libero has now been split into 2 roles. Matthias Sammer in the past played the role that Andrea Pirlo and Rio Ferdinand play together. Somewhat. Below is a much better explanation.
From Arrigo Sacchi to David Luiz, this post has it all.