Granular vs. foliar Cu on wheat?

I've got some rented ground going into CPS wheat that I will not be renting next year. I was contemplating going with foliar copper as the granular is over $14/lb actual and I have another friend seeding it and due to drill setup and pre blended fert using granular isn't an option.

Never done foliar copper before. One retailer is recommending going in at fungicide time. I realize it won't build the soil but I'm just thinking about this year.

Any thoughts?

Thanks.

Granular vs. foliar Cu on wheat?