I thought this was pretty random/psychotic behavior (OP) until it happened to me. Someone made the same lowball 0T offer on one of my best second tier player four times in a row. Each time I countered at 2T because the player in question has not seen action in probably 20 matches and I would not mind selling him. And I made the bidder "suffer" by letting his offer linger for 24 hrs. Only I don't think he was suffering as much as I was. When a player is in negotiations I cannot train him or dope him (my starting player got suspended and my 3rd stringer got injured so I had to play this guy and his morale was down from being on the bench for so long). In the end this was getting so annoying that I started considering selling just to get rid of the guy (the bidder, not the player). Which is exactly what he wanted.

Fortunately, someone else came in with a 2T offer. I countered at 3T just to make sure I'm doing my job, but will take the offer.