The 24-year-old has signed a four-year contract with the Scottish champions, with an option to extend, after the clubs agreed a fee of €10.5 million.
Hassan arrives in Glasgow with experience from Spanish football and a growing reputation as a dynamic attacking option. The move represents a significant step in his career as he joins one of the most successful clubs in Scottish football.
Celtic have moved quickly to secure the Egyptian’s services as they continue to strengthen their squad for the new season. The winger is expected to provide pace, creativity and goal threat from the flanks under the current technical setup.
The transfer fee of €10.5 million underlines the club’s valuation of Hassan’s potential and his ability to contribute in both domestic and European competitions. He will now begin the process of integrating with his new teammates as Celtic prepare for the challenges ahead.
Hassan’s arrival adds further international quality to the Celtic attacking ranks and marks another notable African addition to the Scottish Premiership.