I always like that line that went something like this " you watch a barca game, afterwards you will feel Busquets was invisible, you have barely seen him yet when you focus on Busquets alone you will see the game"
He is definitely the master in the shadows and the glue to Barca's system.
I wonder why teams never try to bully Busquets, if you can take him out the game you ruin our chances greatly since he is everywhere when stopping/starting attacks.
I think Mourinho tried at Real but in general it doesnt happen often. They always focus on Messi.