There's some players I'm trying to sell, and suddenly it started accepting all transfers for free while they have more than a year left on their contract. I think I've spent about 4 hours trying to figure out why (so I can stop it), but just can't find the reason. Things I've looked at already (that I remember):

Transfer offer setting set to "I'll respond myself".
Contract time left (over a year).
Board (not sure how to 'fully' check this, but I got no notifications about it).

Something I've noticed as well: Can't trigger optional extention of contract on one of these players it's happening for.

Also don't know how to post screenshots on here, so if you tell me I'll post it (first thread I've ever made).