BOULDER--University of Colorado head football coach Mel Tucker has informed CU Athletic Directorthat he is resigning his position, effective immediately. George issued this statement Wednesday morning:"We are disappointed to see Coach Tucker leave," George said. "We are excited about the upward trajectory of our football program and we'll get to work immediately hiring the next head coach to build on our momentum and lead our young men. We're confident this program is on the verge of competing at the highest level and has the resources and support in place to do so for a long time."The search process for a permanent replacement is already underway.