Born in L'Hospitalet de Llobregat, Barcelona, Catalonia, de Lucas came through the academy of RCD Espanyol, making his first-team debut on 15 May 1998 away against Real Valladolid (his sole appearance of the season) but being promoted to the main squad immediately afterwards. Subsequently, he became an important offensive element for the Pericos, appearing in 30 La Liga matches and scoring four goals in 1999–2000 while helping the club to that year's Copa del Rey.
After his contract expired in 2002, and after an unassuming loan spell at Paris Saint-Germain F.C. the previous year, de Lucas joined Chelsea, being relatively used in his first and only season. His sole goal for the English team was a well-executed chip in the UEFA Cup against Viking FK, in a 2–1 home win but 4–5 loss on aggregate.
De Lucas then returned to Spain, having a huge impact at Deportivo Alavés, although most of his stint was spent in the second division. He netted six times from 40 appearances as the side returned to the top level after two years, being immediately relegated the following campaign.
After another season in division two, de Lucas became Real Murcia's first signing after it achieved a top flight return in 2007, agreeing on a two-year contract. He featured heavily in his first year, notably scoring in a 1–1 home draw against Real Madrid, but the club returned to the second tier.
In August 2009, de Lucas had a trial with 's Blackpool after his Murcia link had expired, alongside Will Haining and Ishmel Demontagnac. A deal did not materialise, and he signed with FC Cartagena – freshly returned to the second division – shortly after; he scored the first goal of the new campaign, a 1–0 success at Girona FC.
In late June 2010, after nearly helping Cartagena to another promotion (fifth place, with chances of promotion until the last two rounds) while scoring a career-best 11 goals, de Lucas moved to RC Celta de Vigo for two years. He produced the same individual numbers in his first two years – 37 games, nine goals – helping the Galicians promote to the top level in 2012 as runner-up.
After suffering relegation from the second tier, with Hércules CF, de Lucas retired from football at the age of 35. In February 2015, however, he returned to active, joining English amateurs Biggleswade United.