You might be better to send your ewes to the tup, rather than bringing him to you. That way, the tup's owner can still use him on his ewes.
We don't lend or lease out tups any more after a couple of bad experiences, and for biosecurity reasons. One of those occasions was where permanent damage was caused to our tup, and the other, we acquired orf and infectious conjunctivitis as a special gift!
It is usual to pay a stud fee for using a tup, plus a grazing fee if you send your ewes to him.
(I'm not offering a tup incidentally, just a comment)