While applying for Medicaid, I anticipate to create a trust for what little assets my dad will have left. Will this create any issues or penalties?

My father has funds to pay for his own care for about a year before he will need help from Medicaid. I anticipate using a second year to pay his expenses while applying for Medicaid after creating a trust for what little assets he will have. Does this create any unforeseen issues or penalties? I don't want to pull the rug out from under him by both putting him an ASF, and telling him he has no assets or retirement pensions coming to him any longer due to the trust.