Transfer Deadline Day is the least favourite part of the game for me. I have the continue timeout option set to instant, but this doesn't work on deadline day because I get so many offers for my players. I literally have to click continue every 15 in-game minutes to progress the game.
I often try to circumvent this by just holidaying by a day, but if I have a match later that day, or a CL squad registration, then I just have to put up with all the deadline offers until the match or registration is completed.
As far as I'm concerned, buying clubs setting a deadline shouldn't have to lock me into accepting/rejecting their offer. It should simply mean that the offer is no longer valid if I don't accept it in time.
I get all my transfers done well ahead of deadline day, so it really is annoying to have to deal with this.