Last year in IPL 2019 we saw there were many incidences where there were bad umpiring decisions occurred,
Like many no-balls were counted as balls,
Last Year even captain Cool Ms. Dhoni stepped into the ground and have argued for the clarification of no-ball after that he was fined with half of his match fees.
Read this article here
Virat Kohli also spoked about umpiring in the Press conference
Regarding all these issues We may see the new umpire just for checking no balls.