A person familiar with the decision says Auburn has hired Gus Malzahn as head coach.
The person said Malzahn will be introduced later Tuesday.
The person spoke to The Associated Press on condition of anonymity because the school had not announced the hire.
Malzahn was the offensive coordinator during the Tigers' national championship run in 2010, but spent last season at Arkansas State in his first college head coaching position.
He led the Red Wolves to a 9-3 record, a Sun Belt Conference title and a berth in the GoDaddy.com Bowl.
Malzahn returns with his fast-paced, no-huddle offensive style that quarterback Cam Newton operated to perfection two seasons ago.
Malzahn replaces Gene Chizik, who was fired after a 49-0 loss to No. 2 Alabama to complete a 3-9 season.
A person familiar with the situation tells The Associated Press that Wisconsin coach Bret Bielema has agreed to become the new coach at Arkansas.
Bielema will sign a multi-year contract soon, according to the person spoke Tuesday on condition of anonymity because the school had not yet made an official announcement.
The move was the second stunning hire at Arkansas, which brought in John L. Smith after firing Bobby Petrino earlier this year after a scandal in which Petrino hired his mistress to work in the football department.
Arkansas was 21-5 the last two seasons, but went 4-8 this season under Smith. Athletic director Jeff Long announced after the season that Smith would not return.
Bielema was 68-24 in seven seasons at Wisconsin, including an 8-5 mark this season.