Exeedy release bearings are known to make noises.
Mine did from day 1, didn't change over 30k miles & is, to my knowledge, still going strong.
Did take this bit out of my recent post, as didn't want it to sound like it's ok or perfect!. Now someone else has brought it up, have known people to have noisy release bearings for years and many thousands of miles and it not get any worse, or affect the running of car or working action of the clutch in any way shape or form. If it's all working ok and no problems with getting into gears or operation of clutch?, then maybe live with it a bit longer and see if it does get any worse. Hope maybe this has put your mind at ease a little??, cheers.