Lazio, Lyon and West Ham also earned wins, while fan unrest led to the game between Marseille and Galatasaray being halted for about 10 minutes in the first half.
Goals from Aubameyang, Saka, Smith Rowe seal the deal for the Gunners in a 3-1 win over neighbours Tottenham.
With 266 goals in 379 appearances, Greaves was the all-time record scorer for Tottenham, which announced his death on Sunday.
While Tottenham drew 2-2 against Rennes in the Conference League, West Ham beat Dinamo Zagreb 2-0 in UEFA's second-level Europa League.
Spurs won their opening three games of the season under new manager Nuno Espirito Santo.
It was a third successive win at the start of Nuno Espirito Santo's first season in charge of the north London club.
The striker had been hoping to secure a transfer away from the London club in the search of a first career trophy
Kane, who has been heavily linked with a move to Manchester City, entered as a substitute in the 71st minute.
Son finished off a quick counterattack in the 55th minute and Tottenham effectively neutralized City’s many attacking threats to give Nuno Espirito Santo a statement victory on his debut.
Kane failed to report for preseason fitness checks at Tottenham last week, angering fans amid his apparent interest in joining City.
Harry Kane's 'will-he, won't he?' move to Manchester City from Tottenham remains in the balance and may only be decided in the final days.
Heung-min Son signed a four-year contract extension Friday to keep him at the Premier League club through June 2025.
The England captain has indicated he wants a change of scenery after Tottenham's seventh-place finish in the Premier League left it out of the Champions League.
Tottenham's chaotic search for a manager ended with the hiring of Nuno Espirito Santo on Wednesday as Jose Mourinho's successor.
The north London club said it repaid the low-interest loan from the 250 million pounds ($347 million) it recently raised from institutional investors.
The inaugural Europa Conference League is a the third-tier UEFA competition that kicks off in July.
Being beaten 3-1 by Leeds on Saturday left Tottenham five points from fourth place with three games to go and having played one more than Chelsea.
A rare goal from Aymeric Laporte produced a familiar outcome: Manchester City winning the EFL Cup.
Both teams recovered to register vital wins and leave them in good spirits for their next match — their meeting at Wembley Stadium for the English League Cup final on Sunday.
Arsenal, Chelsea, Liverpool, Manchester United, Manchester City and Tottenham throughout Tuesday evening withdrew their participation from the breakaway league.
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