Just googling I found several articles that predict Big 10 will vote to return in October, but some articles have everyone playing and some have a few opting out.

SI article with TTUN, MSU, and maybe MD and WI opting out.  https://www.si.com/college/maryland/football/big-ten-revote-monday-morning

SI article that TTUN will vote yes since students and staff are essentially on strike.  https://www.si.com/college/michigan/football/michigan-football-jim-harba...

247 article where WI Chancellor says its all or none,  so no opt outs if they play.  https://247sports.com/Article/Big-Ten-football-2020-season-return-revote...

mlive article where MSU and MN Presidents said first vote was not official (if true, lowers number of yes votes needed if it is considered the first vote).  https://www.mlive.com/sports/2020/09/big-ten-reportedly-poised-to-revote...

aaaaaaarrrrrrrrggggggg the agony continues.