not be fussed
be not fussed (about someone or something)
To not have strong feelings, either positive or negative, about someone or something. A: "Do you still want to try and go to the match tomorrow?" B: "I'm not fussed, to be honest. It would be nice to spend the day with you." A: "Would you like beef or chicken for dinner?" B: "You decide, I'm not fussed either way."