A touchline argument erupted during a December game over accusations the Romanian fourth official, Sebastian Coltescu, had described Basaksehir's Cameroonian assistant coach Pierre Webo as "black", or "negru" in Romanian.
Coach Mauricio Pochettino was manager of Tottenham in the Premier League for five years and led the Spurs to the Champions League final in 2019.
Former Spurs boss Mauricio Pochettino is reportedly set to be Tuchel’s replacement.
The Bayern Munich forward has been named The Best FIFA Men's Player 2020, beating off competition from last year's winner Lionel Messi and Cristiano Ronaldo.
Paris St Germain and Istanbul Basaksehir players took a knee before the game in reaction to a racist comment by a match official that caused the Champions League match to be rescheduled.
PSG forward Mbappe and Neymar and others voiced their support to Basaksehir assistant coach Pierre Webo after the racist abuse by Romanian fourth official, Sebastian Coltescu.
Chelsea beat Leeds United 3-1 in front of 2,000 spectators at Stamford Bridge while Manchester United fought back from a goal down to win 3-1 at West Ham United.
PSG could have been on the brink of elimination from Group H with a defeat at Old Trafford but Neymar put last season's runners-up ahead in the sixth minute and the world's most expensive player sealed their victory in stoppage time.
Sergio Conceicao's side were on the defensive for long periods at the Estadio do Dragao, but a series of superb saves from Porto keeper Agustin Marchesin secured the point they needed to advance.
Tuesday's action in the Champions League saw Erling Braut Haaland, Neymar, Cristiano Ronaldo and Bruno Fernandes all get among the goals.
The three-time European champions dominated possession in Turkey but were badly exposed on the break as former Chelsea forward Demba Ba and Edin Visca put the home side 2-0 ahead.
Approaching Champions League games will go ahead behind closed doors, as UEFA is allowing clubs to open stadiums up to 30 percent of capacity.
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