John Terry, who has been out of a job since leaving his role as assistant coach at Aston Villa in July, will focus on Chelsea's youth development programme.
Both teams left the pitch after a touchline argument erupted when the Romanian fourth official, Sebastian Coltescu, appeared to describe Basaksehir assistant coach Pierre Webo, as "black", or "negru" in Romanian.
John Terry made 717 appearances for Chelsea, scoring 67 goals, and was widely regarded as one of the best English centre-halves of his generation.
Terry left Stamford Bridge after 22 years' service in June 2017 for a season-long stint with Aston Villa and rejected a move to Spartak Moscow this week.
The 37-year-old defender was believed to have been offered a wages in the region of 3 million pounds ($3.9 million) for a one-year deal.
John Terry signed a one-year contract on a free transfer for second tier side Aston Villa on Monday.
It is Chelsea's second league title win in three seasons, their sixth in total, and comes at the end of former Juventus and Italy coach Antonio Conte's first season as manager.
Despite being Chelsea's captain, John Terry has become an increasingly peripheral figure under Italian manager Antonio Conte and has made just five league appearances so far this season.
John Terry has agreed to extend his 21-year stay with Chelsea by at least another season
John Terry, who was scheduled to leave Chelsea F.C following the end of the season, has announced that he would like to stay in the club after they offered him a new contract.