(CBS) Missouri head football coach Gary Pinkel will resign at the end of the 2015 season, citing health reasons for his departure.

In May, Pinkel was diagnosed with non-Hodgkin lymphoma cancer of the blood in May, but returned to the Tigers after doctors said his treatment would not interfere with his job.

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In a statement to the media, Pinkel addressed his situation.

“I made the decision in May, after visiting with my family, that I wanted to keep coaching, as long as I felt good and had the energy I needed,” Pinkel said in the statement. “I felt great going into the season, but also knew that I would need to re-assess things at some point, and I set our bye week as the time when I would take stock of the future. After we played Vanderbilt (Oct. 24), I had a scheduled PET scan on Oct. 26th for reassessment, and then visited with my family and came to the decision on October 27th that this would be my last year coaching. I still feel good physically, but I decided that I want to focus on enjoying my remaining years with my family and friends, and also have proper time to battle the disease and give full attention to that.”

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Pinkel will stay on the job through the end of the year, and could return to Missouri in another capacity with the athletic department. He boasts a record of 117-71 in 15 seasons, which makes him the winningest coach in program history.

Missouri plays BYU this Saturday in Kansas City’s Aarowhead Stadium.

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