NBC Universal made the announcement yesterday but they did not specify how many episodes Will would feature in.

The Office executive producer Paul Lieberstein said: ‘We found Steve Carell when he was nothing but a movie star and we turned him into a television star.

According to Entertainment Tonight, Paul added: ‘We are proud to continue The Office’s tradition of discovering famous talent, and we do hope that once America gets a good look at Will, they’ll see what we see: tremendous raw sexuality.’

Carell had said he would not be returning to the award-winning series after this season.

The Office actor Rainn Wilson later tweeted: ‘Yes it’s true! Will Farrell is joining the Office 4 (at least) a 4 episode arc! Were psyched!’

Source: monstersandcritics.com