If I cook eggplant today, can I use it tomorrow? Or will it end up mushy by then? (Please see details.)

I want to saute some eggplant tonight as part of a pasta dish for tomorrow. Since it needs to be soaked in salt water first (to get rid of the bitterness) and then well drained, I don’t think I will have time to use it tonight. This assumption is based on the time that my husband and I get home from work. My thought is to let it soak and drain, saute it and store it in the refrigerator for tomorrow.

What do you think?