Here we have sheep, no cows (Roquefort sheep). I got a tractor fork full from a friend which was last year's. He was a little perplexed at the idea of charging for something he has piling up in the yard - but that could just be him. I would think that so long as he knows what you need it for you should be alright. Certainly every man and his dog here has a potager and uses manure. Perhaps he was surprised at your timing - all the potagers here were manured in early march. You did ask for fumier didn't you? (and not merde!!!!!!????)
bon potager
Tx