[3] On 18 May 2020, the SPFL declared the end of the season determining on an average points per game with the Dons finishing in fourth place.

[9] On 18 June, the Europa League First Qualifying Round draw was made and the Dons were drawn to play against Finnish side RoPS.

[14] On 25 June, Greg Leigh signed a season-long loan from Dutch side NAC Breda with the option of a future deal.

[22] Before the first European tie with RoPS Rovaniemi, goalkeeper Joe Lewis was named as the new club captain after the departure of Graeme Shinnie to Derby County.

[23] On the day of the match, manager Derek McInnes and assistant head coach Tony Docherty signed a new two-year deal to 2022.

[27] The Dons then played RoPS Rovaniemi in Finland, and in a very nervy match, they won 2–1 to set up a tie with Georgia side Chikhura Sachkhere.

[29] After drawing 1–1 in the first leg,[30] the Dons thrashed Chikhura Sachkhere 5–0 at Pittodrie[31] to set up a tie with Rijeka[32] who they met in 2015 and won 5–2 on aggregate.

[35] The Dons also resisted a transfer request from defender Scott McKenna and bids for him from Queens Park Rangers and Nottingham Forest and Bristol City.

[36] Aberdeen lost the away leg to Rijeka 2–0, with reports Dons fans were treated badly with lead to an investigation by UEFA.

[39] Aberdeen needed extra time to beat Dundee in the League Cup to set up a quarter-final tie away to Hearts.

[52] Aberdeen drew their next game 1–1 at home to Hibernian but had both Curtis Main and Lewis Ferguson sent off for straight red card offences.

[60] On 31 October, Sir Alex Ferguson opened Aberdeen's new training facilities and football academy Cormack Park, saying it was "up there with the best" he has seen.

[76] Manager McInnes claimed Celtic defender Kristoffer Ajer "laughed and winked" at Cosgrove as he was sent off, saying they would "100% appeal the decision".

[77] They were dealt with "a real blow" after the match as Greg Leigh and Craig Bryson were officially ruled out for two months with separate injuries.

[79] Aberdeen ended the year with a 2–1 home win against Livingston,[80] which followed with a hard-fought 1–1 away draw at Tynecastle against bottom of the table, ten-man Hearts.

[88] On 18 January, the Dons scraped past Dumbarton with a late Cosgrove penalty to make the fifth round of the Scottish Cup.

[96] The Dons began February by putting in a superb defensive display against Rangers at Ibrox ending an eight-game home winning streak for them with a 0–0 draw.

[102] On 19 February, the team showed "sheer guts and tenacity" in their Scottish Cup fifth round replay against Kilmarnock after coming from behind twice to win in extra time.

[105] They ended the month by defeating St Mirren in the Scottish Cup with goals from Lewis Ferguson and a late penalty from Sam Cosgrove to face Celtic in the semi-finals on 12 April.

[107] On 4 March, they came back from two goals down to earn a draw at Kilmarnock to preserve the eight-year unbeaten record there but slipped further behind Motherwell in the table.

[111] This led to manager McInnes telling the players to "stay in their own houses" and "to avoid gyms, cinemas, concerts and restaurants".

"[113] Chairman Dave Cormack's investment group pledged £2Million and confirmed players and staff were deferred between 10% and 30% in wages for four months.

[117] On 18 May, following on from the season being brought to an end by the SPFL, chairman Dave Cormack said the club faced the "daunting prospect" of a further £1Million in losses.