Abreu with Krasnodar in 2011
|Full name||Márcio Nuno Ornelas Abreu|
|Date of birth||25 April 1980|
|Place of birth||Funchal, Portugal|
|Height||1.66 m (5 ft 5 in)|
|1º Maio Funchal|
|2018–||1º Maio Funchal||7||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 27 January 2019|
After arriving in 1989 at hometown's C.S. Marítimo, and going on to represent its every youth sides, Abreu never settled in the first team, constantly bouncing between that squad and the reserves. In 2004, he was released and joined Madeira neighbours A.D. Camacha in the third division, the same as Marítimo B.
Abreu signed in the summer of 2007 with Bulgarian club PSFC Chernomorets Burgas, being regularly used during his three-and-a-half-season spell. In February 2011 he was transferred to Russia's FC Krasnodar, freshly promoted to the Premier League.
On 6 February 2011, Abreu participated in his first game for his new team, playing the first 72 minutes in the 2–2 friendly draw with Ukraine's SC Tavriya Simferopol. His first official appearance came exactly one month later, against FC Amkar Perm for the campaign's Russian Cup (120 minutes played, 1–0 win); his league debut occurred six days later, in a 0–0 draw at FC Anzhi Makhachkala.
On 10 June 2011, Abreu scored his first goal for Krasnodar, in a 3–1 away success against FC Rostov. He left at the end of 2013–14, signing with fellow league club FC Torpedo Moscow shortly after but retiring from the game shortly after for family reasons.
After two years of inactivity, 36-year-old Abreu returned to football with former club Camacha, still in the third level.
- После матча с "Анжи" стадион тепло проводил Марсио, Тубича и Анджелковича (in Russian). FC Krasnodar. 12 March 2014. Retrieved 20 June 2014.
- МАРСИО ПРОДОЛЖИТ КАРЬЕРУ В «ТОРПЕДО» [Márcio continues career in Torpedo] (in Russian). FC Torpedo Moscow. 3 July 2014. Archived from the original on 2 October 2014. Retrieved 1 September 2014.
- Португальский хавбек "Торпедо" Марсиу Абреу решил завершить карьеру [Torpedo Portuguese midfielder Márcio Abreu decided to end his career] (in Russian). Rsport. 1 September 2014. Archived from the original on 8 August 2014. Retrieved 4 August 2014.