Cowboy Ninja Viking: Priyanka Chopr's Hollywood film opposite Chris Pratt delayed!
But it could mean that he might not have time to fit in filming a fifth series for the hit show based on legendary detective Sherlock Holmes.
A source said: "Benedict has become a huge player in the Marvel universe. But the nature of the shoot for the sequel means we're looking at 2020 for the next time we see the sleuth in a full series - if it happens at all."