After his performances with under-20s, Rentería was transferred to Sport Club Internacional in Brazil. He showed his flair there, usually coming off the bench to score important goals, the first being one scored in a victory against Club Nacional that earned his club a quarter-final berth in the 2006 Copa Libertadores, and the next being a goal scored in the second leg of the quarter-finals against L.D.U. Quito; the club would eventually go on to win the tournament. Despite often playing backup to Rafael Sobis, who would then move to Real Betis, he became an important attacking element and a fan favourite at the Brazilian club.[2][3]
Rentería's form was, however, cut short by a series of injuries that left him out of the side, also causing him to miss the entire 2006 FIFA Club World Cup.[4] In the 2007 January transfer window he signed for FC Porto for R$7,457,400, but all of the fee belonged to a third-party owner; in reverse, International had to pay an additional commission to the football broker.[5][6] Porto, on the other hand, re-sold 50% of its economic rights on any future transfer.
Porto would loan Rentería again for 2009–10, as he joined Clube Atlético Mineiro on 22 July 2009.[10] However, in January 2010 he moved clubs again – still loaned – returning to league leaders Braga who would eventually finish second in the table.[9]
In January 2011, Rentería returned to his country after a six-year absence, signing with Once Caldas, where he was an important player and scored 10 goals in 14 games as his club finished top of the table in the regular season. On 29 May, in the playoff semi-finals against Millonarios, he scored the only goal of the match to draw the aggregate score at 1–1; however, he missed his penalty in the shootout and his club were eliminated.[11] Shortly after the 2011 Apertura, he left the club and joined Mexico's Cruz Azul for three years; however, just days after arriving, he rescinded his contract after failing his medical.[12]
^"Relatório da diretoria (2007)" [Board of directors report (2007)] (PDF) (in Portuguese). SC Internacional. 2007. Archived from the original(PDF) on 24 March 2012. Retrieved 27 April 2012.