Gasana played his final two years of
college basketball for
Boise State. Gasana started his professional career in 2007. In 2010, Gasana joined Moroccan club
Chabab Rif Al Hoceima for one season which was followed by another season at Spaza Sports BC. In 2019, Gasana signed with Rwanda-based
REG BBC to play in the Rwandan
National Basketball League. In October 2019, he joined the defending champions
Patriots BBC. He went on to win the championship in 2019 and 2020 with Patriots. He also played with the team in the
2021 BAL season, where he led his team in scoring with 14.3 points per game. The Patriots finished in the fourth place of the tournament. In November 2021, Gasana joined Burundian team
New Star on a temporary contract, to join them in the
2022 BAL qualifiers. New Star failed to qualify, as the team was disqualified after players tested positive for COVID-19. On January 5, 2022, Gasana signed with
Bahrain Club of the
Bahraini Premier League. In May 2022, Gasana joined REG for a second stint ahead of the team's campaign in the
2022 BAL Playoffs. They were eliminated after just one game, losing to
FAP. After the BAL, Gasana returned to Patriots BBC. In November 2022, Gasana played for
Bangui Sporting Club in the
Road to BAL. ==National team career==