Athletic Bilbao Murillo was born in
San Sebastián,
Gipuzkoa. A product of
Athletic Bilbao's prolific youth system, he made his debut for their first team on 24 November 2001, in a 2–1 away win against
FC Barcelona; he played a further 18
La Liga games the
following season, after breaking his leg during preseason. From
2004 to
2007, Murillo would be an important defensive element for the
Lions, being deployed as a
right-back or in
the middle, but he suffered greatly with injuries subsequently. On 21 December 2008, after nearly a year without competitive appearances, he started in the 1–0 away victory over
Real Betis only to leave the pitch before
half-time injured. On 11 August 2009, after only two matches during the
2008–09 campaign, Murillo moved to
Segunda División side
UD Salamanca in a
season-long move. In late August 2010 he terminated his Athletic contract and left the club after 11 years, signing with
RC Celta de Vigo also of the second tier.
AEK Larnaca Having joined in the summer of 2011 at the age of 28, Murillo went on to play several years with
AEK Larnaca FC in the
Cypriot First Division, as part of a large contingent of Spanish players and managers at the side. He helped the club finish second in the league table for three consecutive seasons between
2015 and
2017, their highest-ever placings; his final professional match was the
2018 Cypriot Cup final which was won 2–1 against
Apollon Limassol FC (the scorer of the winning goal being another Spanish veteran,
Acorán), to collect their first silverware since lifting the same trophy in 2004. In June 2018, Murillo retired and was named AEK's
director of football as longtime Athletic Bilbao teammate
Andoni Iraola signed as manager. ==Personal life==