Paul Pogba is feeling increasingly unsettled with his position at Manchester United following criticism against him by Jose Mourinho.
Pogba would consider a move to either Barcelona or Juventus if given the option.
United have no plans to sell Poga at this time. Pogba is a favorite of Ed Woodward.
Pogba will meet with Mourinho this week.
"I don't think it's about us getting the best out of him," Mourinho said. "It's about him giving the best he has to give. I think the World Cup is the perfect habitat for a player like him to give the best.
"Why? Because it's closed for a month, where he can only think about football. Where he's with his team on the training camp, completely isolated from the external world, where they focus just on football, where the dimensions of the game can only motivate.
"During a season, you can have a big match then a smaller match, then one even smaller, then you can lose your focus, you can lose your concentration, then comes a big match again."