Clutch Release Bearings


Does anybody have any advice/knowledge with the Clutch Release Bearings. I've got a '93 L reg Fourtrak Fieldman, just lately it's becoming increasing more difficult to get into gear, my husband tried yesterday & could only get 1st & 2nd when you dip the clutch it's silent when not it's noisey. He was told this morning it may be the Clutch Release Bearing????