Will The Green Goblin Appear In The Amazing Spider-Man 2?

We know that Electro and Rhino will appear in "The Amazing Spider-Man 2." However is it possible that the Green Goblin will show up as well. We know that Harry and Norman Osborn are set to appear in the film. However a recent international poster suggest that more villians are going to show up. Check out the full poster below and the close up shot of the Green Goblin. The Goblin does look like actor Dane DeHaan who plays Harry Osborn.

Full Poster

Harry Osborn as The Green Goblin?