Subsequently, Lequi signed with Italy's S.S. Lazio, going pretty much unnoticed during his one season-spell. For 2005–06 he returned to Spain, being loaned to RC Celta de Vigo; as the Galicians finished in sixth position and reached the UEFA Cup straight from Segunda División, he was heavily featured, scoring against Real Madrid (2–1 home defeat) and former team Atlético (opening a 3–0 away win).