(player 9573821)
Once I drafted him and put him on TL, Someone bought him. Now in both his Player history and my transfer history there is no mention of it, only his last transfer when he was purchased from free agency is recorded (I'm not sure if there were more transfers in between as he wasn't my player anymore at that time, but I guess so).
I don't remember the detail of his very first transfer, it surely was in first weeks after the draft. No big deal in this case but I guess this buggy behaviour is worth a look for future prevention.