Just got some into on Ricky Memphis’s upcoming appearance on Lost which reveals another returning guest star as well as a combination of characters that will make you say “hmmm”.
Memphis has had a scene with Matthew Fox and Lance Reddick. They filmed in Pearl City and Memphis’ character is supposed to be called “Emilio”. They told me that the filming of the scene took only few hours, then Ricky came back to Italy, so I think it will be a minor role, Memphis was asked the possibility to come back in the future. Since there are only few episodes left, I think that “future” means “next season”.
Source: Il Numero 2