Leaders of the conference's schools have been divided over whether the league is best with 10 schools, where it settled after losing Nebraska and Colorado prior to this season, or finding a way to expand back to 12.
"We've got to get our house in order. We're pretty good with 10 or, if Missouri stays, 11," Neinas said Saturday after helping with the unveiling of a statue of formers Sooners coach Barry Switzer across the street from Owen Field.
"We'll be very strong and solidified and then once you get that, you do your homework first and everything else takes care of itself."
Neinas said the Big 12's expansion committee hasn't met since deciding last week to add West Virginia instead of Big East rival Louisville.
"The expansion committee will continue to look at the landscape of college athletics and at some point will make a determination what they feel is the best size for the conference," Neinas said.
Neinas also said the Big 12 is considering whether it could create a network that would be a collaboration of the schools other than Texas and Oklahoma. Texas already has its own Longhorn Network, and Oklahoma is planning one of its own.
"That would be basically a network that could serve the members that don't have their own institutional-branded networks. We would have a nice inventory to put together, and we're exploring that," Neinas said.
Neinas said the league is not contractually allowed to call its channel the Big 12 Network but it could find another name for it. It's also unclear what, if any, content related to Texas and Oklahoma could appear on the channel.
"We're not that far along," Neinas said. "We're just getting started to see if we can. We've got to work on a format, a business plan, all of that first."
Neinas also said Texas Tech was considered a logical fit to replace Texas A&M as the annual Thanksgiving opponent for Texas but "that has not been finalized."