In a move that was kept quiet until Tuesday morning, Josh Heupel was named the new head coach at Central Florida, a move that upset some players on the Missouri offense.

The Tigers’ offensive coordinator, according to a tweet from center Trystan Castillo, did not communicate the move with his players. It’s unclear how the Missouri players learned of the news, but wide receiver Emmanuel Hall was quick to point out the turnover in the job  — a third coach in four years.

It’s not known how this decision would impact quarterback Drew Lock and the rest of the offense, particularly in terms of decisions to leave for the NFL or return under a new system next year. Lock led the SEC in passing this season, and Missouri led the SEC in scoring offense averaging 39.3 points per game.

Heupel has built his career on tutoring Lock and Oklahoma quarterback Sam Bradford, who won the Heisman Trophy. Jason White also won the Heisman under Heupel’s coaching. Before Missouri, Heupel was assistant head coach and offensive coordinator at Utah State in 2015.

His coaching career began as a graduate assistant at Oklahoma in 2004, tight ends coach at Arizona in 2005 and quarterbacks coach and later offensive coordinator at Oklahoma from 2006-14.