Michael Scott Leaving His Office Before End Of Series?

There have been many rumors suggesting that Steve Carell will be leaving "The Office" before the end of the 7th season. Originally, he was meant to leave at the end, but reports are saying that he may very well be leaving at least four episodes before the end.
The four episodes remaining will show narrowing down and confirmation of the next person who will be the next boss of Dunder Mifflin, Scranton. So I take it that the studio are deffo gonna be carrying on the show without Carell, but will it be as funny, because look at what happened to "Scrubs" after J.D left..................it got cancelled!