Disney ended up with the IP after acquiring Lucasfilm earlier this year. The deal included LucasArts, who owns the rights to Money Island. It is unknown if Disney or the interactive software division has any plans yet for using the Money Island IP, or if they plan to allow Gilbert to licensing the rights to create a game based on the Monkey Island IP.
If Gilbert were successful, it is possible that Tim Schafer and studio Double Fine might be involved in such a project. Of course, this is only speculation at this point.