Manchester United legend Gary Pallister believes the injury concerns surrounding Harry Maguire are a huge headache for England boss Gareth Southgate.
Southgate and his Three Lions players are preparing for Euro 2020, with their first group game against Croatia taking place this coming weekend.
In an interview with Metro, Pallister spoke about England's chances at the tournament and the situation surrounding Maguire, who is recovering from an ankle injury sustained near the end of the club season.
He said: "I think Harry is Southgate's go-to centre half so this is the biggest headache for England. If you look at the defenders he's picked, I think he's needed some versatility in case he's without Harry.
"I think he'll maybe want to play a back four but will only do that if Harry is fit, and properly fit. I'm not sure he will trust us in a back four without Maguire. That headache has maybe changed things for Gareth.
"Harry will go into the tournament with very little game-time and we've just got to hope he's got that match sharpness. It will be really tough for him if he goes in there without playing a game. It's a gamble, but I think it shows how important he is to England."

