Midway through 1970-71 he was named the first team's manager, leading it to a top flight promotion, and being relegated back in 1973.
The prolific goalscorer ended his career one year before Wolfsburg's first top flight promotion in 1997.
He achieved top flight promotion in his first season, then proceeded to amass roughly over 100 overall appearances.
He then served as head coach of Catanzaro, narrowly missing a top flight promotion, and successively Brescia.
In 2005 he joined Real Valladolid, playing 36 matches for a side that achieved top flight promotion in 2006-07.
Reina appeared in 47 games in the following two seasons combined, the last of them ending in top flight promotion.
He then moved to Real Murcia, contributing with three league goals to another top flight promotion.
Never an undisputed starter, he did feature significantly as the Andalusians achieved a first-ever top flight promotion.
He quickly became first-choice, being instrumental in the side's first ever top flight promotion.
He continued to be first-choice in the following years, contributing with 31 matches to another top flight promotion in 1995.