He began his youth club career at the age of five, playing for Hermine Nantes, before making the move to INSEP academy when he was 15, from 2009 to 2012.

In August 2013, Dallo signed a four-year contract with the Serbian club Partizan Belgrade.

[1] In his first season with Partizan, he won the Basketball League of Serbia defeating Crvena zvezda with 3–1 in the final series.

[3] In July 2015, Dallo returned to France, and signed a two-year deal with Olympique Antibes.

[4] On 1 November 2016, Dallo was acquired by the Long Island Nets of the NBA Development League.