LINCOLN, NE – SEPTEMBER 29: Head coach Jeff Brohm of the Purdue Boilermakers looks on during warmups before the game against the Nebraska Cornhuskers at Memorial Stadium on September 29, 2018 in Lincoln, Nebraska. (Photo by Steven Branscombe/Getty Images)The recent decision by Purdue head coach Jeff Brohm to stay with the Boilermakers and snub a potential offer from his alma mater Louisville has led to incredulity across the internet. However, new details have emerged that may suggest a very simple reason for staying put: money.According to Yahoo! Sports, Purdue offered Brohm a raise from $4 million to $6 million per year, along with added incentives to his contract.The Yahoo! Sports report noted that Louisville presented a seven-year, $35 million offer (~$5 million per year).Per NBC analyst Kevin McGuire, that $6 million salary makes Brohm an even higher-paid coach than his counterparts at Texas, Oklahoma, Penn State, Washington, USC, Wisconsin, and LSU – among others.If Jeff Brohm is going to get $6 million per year from Purdue, then he’d then be making more than the current yearly salaries of the head coaches at Texas, Oklahoma, Penn State, Washington, USC, Wisconsin, and LSU, just to name a few.— Kevin McGuire (@KevinOnCFB) November 29, 2018The Cardinals have been actively searching for a head coach since parting ways with Bobby Petrino earlier this month.One of the reasons Brohm has been such a popular candidate for Louisville is his numerous ties to the school and the city.Brohm just completed his second year with the Boilermakers, leading them to a 6-6 record that included a 49-20 upset win over Ohio State.The Boilermakers are also primed to bring in a top-25 recruiting class for the 2019 cycle. Brohm’s relationship with his players and potential recruits also likely played a role in his decision.