Egyptian media reports said Basel would pay Zamalek 1.65 million Euros to acquire Gaber's services.

[6] The 24-year-old Gaber became the fourth Egyptian player to join Basel in less than five years, after signing a four-year contract with the Swiss side.

[7][8] On 1 July 2016 Gaber joined Basel's first team for their 2016–17 season under head coach Urs Fischer.

On 21 November 2017 Basel announced that Gaber would be loaned out to Los Angeles Football Club so that he could obtain match practice in the North American professional league.

On 12 July 2018, Los Angeles picked up their option on making Omar Gaber's loan from FC Basel permanent.

[15] However, Los Angeles immediately transferred him to Egyptian Premier League side Pyramids FC.