The 24-year-old, who moved to Fratton Park during the summer, has reportedly attracted interest from several Championship and League One sides.
N'Gala's contract expires in January and he is yet to agree a new contract with the League Two outfit.
"I don't have a clue about what is happening with my future as I am just enjoying playing my football," N'Gala told Sky Sports News.
"Things are going well at Portsmouth and I am enjoying playing regular football and the fans have been fantastic as well as the manager to me.
"It is definitely flattering to know that other clubs are showing an interest in you and we will wait and see what happens."
N'Gala has scored three goals in nine appearances this season.