Atletico Madrid sports director Jesus Garcia Pitarch has taken responsibility for not signing Villarreal midfielder Juan Roman Riquelme.
Pitarch explained: "We had the possibility to take Riquelme on loan for very favorable financial conditions, but after speaking with (coach Javier) Aguirre, we decided his arrival would have changed our playing system.
"It was too risky to change everything at the last minute, even if Riquelme is a great player. I assume the responsibilities for this decision."