Hayden Christensen to Return as Vader?

Hayden Christensen.

Darth Vader is rumoured to appear in both Star Wars: Rogue One and Star Wars: The Force Awakens and even so Hayden Christensen, who had played Anakin Skywalker/Darth Vader would be back to reprise his role as the menacing number two of the Empire.

A Darth Vader costume is definitely being worked on for Rogue One, but an appearance in The Force Awakens is speculated to be between a flashback as Anakin or a full blown Vader at present.

Will we see Hayden Christensen in the future +Star Wars and or Star Wars Anthology movies as Anakin Skywalker or Darth Vader?