Born in Maputo, Clésio started with Ferroviário and after becoming the top scorer of Moçambola with 6 goals, he signed for Benfica in September 2012, joining the Portuguese club in January 2013.
[6] He made his debut on 6 April, in an away draw against the Wilmington Hammerheads,[7] and scored his first goal on 17 May, bagging a double within five minutes to give the City Islanders the lead over Dayton Dutch Lions.
[8] On 12 June, he added another goal and helped his team beat the Pittsburgh Riverhounds, to win their first league game in four match-days.
[14] However, after Nélson Semedo injury, Rui Vitória promoted him to the first team and converted him to play right-back against Tondela on 30 October.
[23] Clésio made his senior international debut for Mozambique on 15 November 2011 against Comoros during the first round of 2014 FIFA World Cup qualification.