Why Stalin Not Able To Declae His Successor?

Recently the CM of Tami Nadu called a family meeting of six members. In the meeting, he expressed that due to bad health, it is not possible to take such a burden and wants to declare a successor to take care source says. After the marathon meeting, the family members opined that this was not the proper time to announce because his brother M. K. Azhagiri likely to get himself involved in anti-party activities. This will be a great loss to the party and the matter of announcing the minister and his son Udhayanidhi Stalin be postponed.  Stalin has promised to brood over the suggestion source says.