Sporting CP 2007–08 season Páez joined Sporting CP in July 2007 for a fee of €138,000 and was registered with the number #58. For the entire duration of the 2007–08 season, he was also a member of the
Sporting CP U-19 Juniores team where he scored 4 goals in 8 league appearances. Páez was included in Lison's 18-man squad for their
2007–08 UEFA Champions League 2–1
group stage match away loss fixture against
Manchester United on 27 November 2007. On 8 December 2007, Páez made his first appearance of the
2007–08 Taça de Portugal in a fourth round 1–0 win match against
Louletano. Páez was substituted onto the field in the 79th minute of
Milan Purović. Páez eventually debuted in the UEFA Champions League in a 3–0 home victory against
Dynamo Kyiv on 12 December 2007. Páez was substituted onto the field for
Milan Purović in the 86th minute. He debuted in the
2007–08 Primeira Liga in a 2–0 away loss against
Boavista on 5 January 2008, when Páez was substituted onto the field for
Milan Purović in the 72nd minute. Páez made his first and only appearance in the
2007–08 Taça da Liga (Carlsberg Cup) in a 1–0 away loss to
Vitória on 9 January 2008. Páez made his second appearance in the Primeira Liga in a 1–1 away draw against
Académica de Coimbra on 13 January 2008. Páez was substituted onto the field for
Marat Izmaylov in the 63rd minute of the match. Páez had made a total of 5 appearances for Sporting in all competitions.
2008–09 season Having made just two league appearances during the 2007–08 season, Páez eventually spent the 2008–09 season on loan with
CD Fátima where he participated in the
2008–09 Segunda Divisão and was registered with the number No. 9. On 24 August 2008, Páez debuted in the 2008–09 Segunda Divisão in a 2–1 away victory against
Tourizense, where he was substituted onto the field in the 72nd minute for
Miguel Neves. On 19 October 2008, Páez debuted in the
2008–09 Taça de Portugal in a 1–1 draw against
C.D. Feirense, scoring a penalty in the 1st minute of the match to give Fátima a 1–0 lead. CD Fátima went on to win the match 4–1 on penalties. On 25 October 2008, Páez scored his first goals for CD Fátima, a double, in a 3–2 away victory against
CD Operário. Páez scored a penalty in the 58th minute to tie the scores level at 2–2 and then scored the winner in the 92nd minute. Two weeks later, Páez made his second appearance in the 2008–09 Taça de Portugal during a 1–0 loss against
CD Cinfães on 9 November 2008. Páez was substituted onto the field in the 80th minute for
Vasco Varão. His fourth league goal came in a 4–1 away victory, again against
Monsanto on 29 March 2009. Páez had scored a 27th-minute penalty to give CD Fátima a 2–0 lead. CD Fátima had finished in first place of their category, Série C, and qualified for the Championship Playoffs. On 24 May 2008, Páez was substituted onto the field for
Ismael Gaúcho in the 60th minute and scored CD Fátima's fourth goal in the 70th minute in their 4–1 second-leg semi-final play-off victory against
Carregado. CD Fátima won the tie 5–2 on aggregate and progressed to the final. During the final, Páez scored CD Fátima's second goal in the 45th minute in their 2–1 victory against
G.D. Chaves on 5 May 2009. CD Fátima gained promotion to the
Segunda Liga for the
2009–10 season as Páez had made 26 appearances and scored 7 goals in all competitions.
Tacuary 2010 season During the 2010 winter
transfer window, Páez joined Italian
Serie B club
Gallipoli Calcio on a 6-month loan period. Upon returning to Tacuary from Europe in 2010, began what he described as "hell" when he barely played in the matches and then raptured ligaments which left him out of the field for more than six months. His first appearance in the
2010 Paraguayan Primera División season came in a 2–0 home victory against
3 de Febrero on 1 August. He had played a full-90 minutes of the match and scored Tacuary's second goal in the 55th minute. He underwent the operation and the recuperation process but his obsession in return to football accelerated his recovery. He then met persons who said that they were in charge of taking Paez to the most important clubs of the continent.
Independiente Campo Grande During the 2015 División Intermedia, Páez scored in a 3–1 home victory against his former club Tacuary on 24 July 2015. ==International career==