Passage: Januzaj began his football career with FC Brussels but joined Anderlecht as a 10-year-old in 2005. He left Anderlecht for Manchester United at the age of 16 in March 2011, after impressing in a skills session in Brussels.Towards the end of the 2012–13 season, United manager Sir Alex Ferguson promoted Januzaj to the first-team and he was registered with the number 44 jersey; he did not feature in the remainder of the season, but he was an unused substitute in the final game of the season away to West Bromwich Albion. For his performances during the season, Januzaj won the 2013 Denzil Haroun Reserve Team Player of the Year award. He was included in the first-team squad for the 2013–14 pre-season tour of Asia and scored in the final game of the tour against Hong Kong side Kitchee. He also started in Rio Ferdinand's testimonial; United lost 3–1 to Sevilla, but Januzaj provided the assist for United's only goal.

Question: Where did Januzaj first start his football career?
FC Brussels