[1] On 23 July, Ludogorets announced the signing of Alex Santana from Botafogo, with Rafael Forster heading in the opposite direction.

[10] On 26 October, manager Pavel Vrba resigned from his position, with Stanislav Genchev being appointed as interim-manager in his place.

[11] On 12 November, Jorginho was loaned to Wadi Degla until July 2021, with an option to make the move permanent.

[15] On 1 March, Ludogorets Razgrad announced the signing of Kristijan Kahlina on loan from HNK Gorica.

[16] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.