Under these facts, the concept outlined above would not apply. I was originally thinking you had some control over the check but did not deposit it and, even if it was mailed to you, you still would not have had access or control to it until 2018.
The proper way is to report the income in the correct year - so 2018. For 2017, you will have to enter the 1099-MISC as is (because the 1099-MISC is correct from the issuer perspective) and then make an adjustment for your Schedule C for the amount - labeled as "Not constructively received - reportable in 2018" You could make the adjustment by entering this as a negative income number or as an expense.
[Edited 2.5 3:17pm]
