This is the 13598th most frequent Turkish word.
kuracaklarını
"That they will establish/set up."
The word 'kuracaklarını' here means 'that they will establish', expressing a deliberated future intention when reporting.
Onlar yarın bir şirket kuracaklarını söylediler.
They said that they would establish a company tomorrow.
In this sentence, 'kuracaklarını' refers to 'that they will set up', emphasizing a future planned action.
Bahçeye salıncak kuracaklarını planlıyorlar.
They are planning to set up a swing in the garden.
Here, 'kuracaklarını' means 'that they would establish', indicating a proposal or decision to be made.