Several sites are reportng that Rob Van Dam could possibly make an appearance at this year's Royal Rumble.
According to a source I spoke with recently, that idea is definitely a possibility, however nothing has been confirmed yet. As far as RVD making a debut wtih TNA, that seems unlikely at this time, as the source I spoke with told me that he is content just sitting back and watching how the entire situation with WWE vs TNA plays out.
Additionally, I was told that it would take a big money offer from TNA to get Rob to work for the company, as he still considers TNA to be minor league compared to WWE.
Based on what I was told, it would seem more likely to me that RVD would make a one-time appearance at The Royal Rumble, as he did last year, as opposed to returning to WWE full-time, however that is just speculation.