[5] On 29 August, Mahamadou Dembélé left Red Bull Salzburg to sign a permanent deal with Troyes.

[8] On 18 December, Red Bull Salzburg extended their contracts with Enock Mwepu, Sékou Koïta and Patson Daka until the summer of 2024.

[10][11] On 29 December, Red Bull Salzburg announced that Erling Haaland had agreed to join Borussia Dortmund, with the deal being finalised on 3 January 2020.

[19] On 29 January, Youba Diarra returned to Red Bull Salzburg from his loan deal at St. Pauli due to a knee injury.

Eupen on loan for the remainder of the season,[21] and Noah Okafor signed for Red Bull Salzburg on a contract until the summer of 2024.