Greek side Olympiacos F.C. also became interested and, in a widely-documented and somewhat controversial period of negotiation, Diogo finally signed for the club in August 2008, for €9 million and 70% of the player's rights.
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He had been monitored by Arsenal's scouting department for more than two years, and the London club tried three times to sign him, failing on all occasions – this included a £9,000,000 offer, promptly rejected by Portuguesa.
Santo Domingo | Jorge Luis Borges | Luis Miguel | University of Santo Tomas | Luis Buñuel | Espírito Santo | C.D. Luis Ángel Firpo | Tomás Luis de Victoria | San Luis Potosí | San Luis | San Luis Obispo, California | Luis Ángel Firpo | Luis | San Luis, Argentina | José Luis Rodríguez Zapatero | Luis Muñoz Marín | Luís Figo | Santo Antão | Luis Suárez | Luis Muñoz Marín International Airport | Luis Fortuño | Luis Brandoni | Juan Luis Guerra | Santo Tomás District | Santo Antão, Cape Verde | San Luis Potosí, San Luis Potosí | San Luis Obispo | Luis Manzano | Luís de Camões | Santo Tomás District, Chumbivilcas |