People with knowledge of the decision say Big 12 leaders have agreed to invite TCU to join the fractured league as early as the 2012 football season.
The offer to TCU will be extended sometime in the next few days, according to two people with ties to the Big 12. The people spoke only on condition of anonymity because the league has not announced the decision.
TCU, the defending Rose Bowl champion in football, agreed earlier this year to leave the Mountain West Conference after this season for the Big East, which has an automatic BCS berth. But the Big East is on the verge of losing Syracuse and Pittsburgh to the ACC.
The Big 12 lost Nebraska (Big Ten) and Colorado (Pac-12) over the summer and will lose Texas A&M to the SEC next year. Missouri is also exploring options to leave the Big 12.