In the middle of 2007, Díaz moved to Spain's Getafe CF for €4 million, being a defensive cornerstone from the very beginning as the Madrid outskirts team reached the quarter-finals of the UEFA Cup in 2007–08.

During his spell at the Coliseum Alfonso Pérez he rarely missed one game when healthy – for instance, in his third season, he appeared in 30 matches (2,700 minutes of action) to help them finish sixth and qualify for the Europa League.

[8] On 1 September of the following year, after leaving the club due to his wife's direct criticism of manager José Bordalás,[9] he joined CF Fuenlabrada of Segunda División B.

[13] On 6 June 2009, in a 2010 FIFA World Cup qualifier against Colombia, he scored his first and only international goal, finding the net in the 57th minute for a 1–0 home win;[14] he would be, however, overlooked for the final stages in South Africa.

[15] Subsequently, it was reported he was going to be named Miguel Ángel Russo's assistant at Boca Juniors, but he ended up joining the reserves in the same capacity, under Blas Giunta.