According to data revealed by SunSport, Thomas Tuchel can expect the sack after 72 games in charge of Chelsea.
Roman Abramovich has had 16 managers including interim and caretaker bosses since buying the club in 2003.
The 54-year-old Russian sacked his latest boss Frank Lampard on Monday and former Paris Saint-Germain gaffer Tuchel immediately replaced him.
The average spell in charge under the Billionaire Abramovich is 72 competitive games in charge.
Jose Mourinho has managed the most over two spells with 321 matches.
Caretaker bosses Steve Holland and Ray Wilkins took charge for just a game each with Guus Hiddink twice taking the reins as interim manager notching 49 matches in total.
Lampard managed 84 games during his 18-month spell which puts him fourth in the list behind Carlo Ancelotti (109) and Antonio Conte (106).
So as Tuchel took charge before Wolves’ visit to Stamford Bridge on Wednesday, he will manage 19 League games until the end of the season.
With a tough Champions League draw against Atletico Madrid and a maximum of four FA Cup games left it is fair to predict he may manage six more cup games which gives him a total of 25 at the end of the season.
That leaves him 47 more games to manage in the 2021-22 season before he is sacked which SunSport has predicted will take him to May 2022.