When A&M bolted, more than a few teams in the Big XII made a very public, and very coordinated, set of statements about not playing A&M any time soon. Don't know if Tech was among them, but a quick search of Aggie blogs shows the two most hated teams (for Aggies) in the Big XII were Texas and Tech. Texas is hated, because duh, its in Aggie DNA to hate them. But most Ags seem to be raring to get at them again on the field. Texas would have to come crawling (most Ags seem to think that would be appropriate), but the Ags would have a go at them, and relish it.
Ags however, seem to dislike intensely Techg fans at a whole different level, and examples of the things they go on and on about start with Red Raiders crashing yell practices (which are attended by dates, kids, etc) and throwing batteries, bottles, etc. The Ags have a list of places they will not take their mascot, a tame sort of mild mannered 40 pound relative of Lassie. Lubbock seems to be number one on that list of places full of people who would harm a collie, so the dog does not go to any sporting events in Tech territory.
That, coupled with Tech being a school that can be a spoiler, the small size of their stadium, the long drive from College Station, A&M's focus on making a run for a BCS or national title qualifying game in the near future, etc, etc, etc, would seem to indicate A&M's silence on Tech's public teasings means they really are not interested.
My vote is for A&M to schedule a team from California or Washington. Somebody with a real spread offense. SEC spread against Pac 12 spread would be fun. About a million points in the first half would be a break from Alabama vs LSU.