Nate Jones has been prescribed butt rest over bed rest.

Per the training staff, the White Sox reliever has been restricted from any baseball activity for three or four days as he rests a gluteal strain that has bothered him for more than a week.

The right-hander — one of the favorites to become the team’s new closer — had an MRI and X-rays performed on Friday. Jones said Sunday he’s not sure how he suffered the injury, but he isn’t concerned about missing time early in spring camp.

“We’ve got time to fix it and let it calm down, let it settle down,” Jones said. “Once I get back out there, I’m still going to compete and attack and go after that job just like everybody else. … I believe it’s nothing big. Just staying ahead of it, let it calm down.”

Jones said he noticed the left-side injury when he was throwing and described it as discomfort. He believes he’s in good hands with the training staff and has already seen improvement. Jones, 28, also believes the discomfort is something he could pitch through were this the regular season but because he has six weeks to prepare for the opener the team wants to handle it now — hence the butt rest and treatment.