Sir Ian McGeechan selects his three Lions bolters

McGeechan's view: "Billy Vunipola is the standout No 8, but I think Doris could really offer something different if a more mobile game is needed. The Irishman is a great lineout jumper and a superb athlete who operates wider out than Vunipola."

Lions odds: 2/1

Our thoughts: Could be on of the breakout stars of the Lions tour. A potential superstar.

McGeechan's view: "With Manu Tuilagi constantly injured and Jamie Roberts absent stage left, the Lions desperately need a forceful ball-carrier in midfield who can take the ball up and get over the gainline early. Ollie Lawrence is a fledgling in Test terms but he's the player best suited to that role, although the excellent Rugby League-style lines run by Scotland's Sam Johnson means he can also fulfil that role too, as he showed at Twickenham two years ago."

Lions odds: 10/1

McGeechan's view: "There is no substitute for pace, but this potential bolter also glides past would-be tacklers without pausing for breath. Used properly he could wreak havoc, although he is prone to worrying defensive lapses. However, with rock solid campaigners like Anthony Watson, Jonny May and Jack Nowell available, he's a luxury Warren can afford."

Lions odds: 2/1

Our thoughts: The most exciting wide-man around, he could be a breakout star during the 2021 tour