These are one game agreements between non-conference opponents.
University Athletic Departments finalize games when all details are solidified. contracts are offered by the home team. When a series is announced, it is usually codified without contracts using a non binding, but expectation of a contract. University administrators will usually execute a simple MEMORANDUM OF AGREEMENT (MOA) for each game. An MOA isn't a contract. A contract is inked for each game AS details become solidified and performance expectations on each party finalized.
In the case of Wisconsin visiting BYU, the return game would NOT be mentioned in the Wisconsin Contract. That is because the term "a future date to be named" just isn't appropriate or necessary in a specific contract agreement. Arbitrary language of non-specific details just doesn't belong. A contract (and the one presented if authentic is a very good example) is for performance under very specific terms and payments.
On the return game, BYU will be the offerer - NOT Wisconsin! Those of you looking for the return game language in the BYU at Wisconsin contract are simply looking in the wrong place. Salah could have told IndyCougar that.
MAYBE a Business Law class for some of you guys...just a suggestion. BY THE WAY, Wisconsin cannot sign for specific dates yet until the Big TEN releases available dates to them. That doesn't usually happen until a year or so before the season. So don't go looking for documents that probably will not be inked for another year or so. Your schools administrators announced a HOME and HOME series with Wisconsin. The contract for the first game is made. I am pretty sure the schools have agreed to an MOA for the latter and a contract will be signed when that becomes legally possible.
Patience is a virtue.
Trust in your AD is advisable.