5. Mark Wilson
The back-rower has only made one start since the 2019 Rugby World Cup during a disasterous, injury-ravaged loan spell with Sale Sharks. Now back at Newcastle Falcons, he won’t have played a game in close to seven months when the 2020 Autumn Nations Cup kicks off. With a number of young back-rowers, such as Jack Willis, Ted Hill and Alex Dombrandt pushing for a call-up, the 30-year-old could miss out.