Gzira United secured the services of thirty-four year old goalkeeper David Cassar.

Cassar started his career with the Pietà Hotspurs nursery but eventually moved to the Paola Hibs nursery. He spent three years on loan with St. Patrick and two years on loan with Tarxien Rainbows before making his move to the Rainbows on a definite transfer in 2011. Cassar spent two years on loan with Pietà in season 2013/14 and 2014/15 and two years on loan with Hamrun Spartans in 2015/16 and 2016/17. In summer 2017, he moved to Birkirkara but joined Qormi on loan in January 2019. In summer 2019, he signed for Sirens, spending two years with the club. Last summer, Cassar played for Sliema Wanderers.

The Maroons had earlier signed Marcelo Dias, Andy Borg and Brooklyn Borg.