I hope this isn't true.
Five-Zero mostly centers around McGarrett, just as original Five-O did.
While we can occasionally have a diversion from that, a season with a reduced presence of McGarrett would not be very interesting, and I think that would make the 10th season its last.
This would also disappoint a lot of the female viewers of the show, many of whom partially watch because they think Alex O'Loughlin is good looking.