Speaking to Digital Spy to promote The Hobbit: An Unexpected Journey, Freeman talked briefly about his thoughts on the new series, which will begin with his character John Watson believing Sherlock (Benedict Cumberbatch) to be dead.
Asked whether he could see his incarnation of Watson fainting upon realising that his friend is alive, as he famously does in Arthur Conan Doyle's books, Freeman replied: "Probably not, no.
"I don't know, I think Mark [Gatiss] is writing the first episode, and again I've not seen that, I've not seen the script yet. But yeah... fainting might not quite cut it."
The second series of Sherlock recently topped Digital Spy's top 25 list of the year's best television shows.
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The third series of Sherlock will begin filming in March, and is expected to premiere in late 2013.
Watch a trailer for the first series below: