What has worried NRL legend Andrew Johns about the Mitch Barnett signing

The Eighth Immortal Andrew Johns has weighed in on the Broncos signing of Mitch Barnett.

Speaking to Adam Hawse on 2GB Wide World of Sports, the NRL legend revealed there is one thing about the signing which has left him worried.

Listen to more highlights from Wide World of Sports below:

Image: Quinn Rooney/Getty Images