According to a Boulder Daily Camera report, Colorado will stay in the Big 12 for two more years, which would leave the conference with 11 teams for one year.
When Colorado originally agreed to join the Pac-10, the move was scheduled before the 2012-13 school year. Colorado has been negotiating with the Big 12 over departure fees to leave after the upcoming year, but no deal has been reached.
Nebraska has already agreed to leave the Big 12 for the Big Ten after 2010-11, and Utah is joining the Pac-10 after this season. If Colorado stays in the Big 12 an second year, both the Big 12 and Pac-10 would have 11 teams in 2011-12.