reminds me of a kid I saw play several times in high school, Nic Shimonek of Corsicana MIldred. Not sure if we recruited him or not, Mildred is not a football factory but Nic led them to the playoffs all 4 years including a 13-1 record his junior year & state runner up his senior year. He signed with Iowa out of high school (2013), redshirted there his freshman year, and then transferred to Texas Tech, sat out last the 2014 season due to transfer rules, played a couple of downs last season in mop up duty, and is now the backup to Mahomes. I'm convinced Nic would have pushed for the starting job here his freshman year and would now be a 3rd year starting QB.
I'm sure there's countless others out there just like this.