Manchester United officials are concerned Alexis Sanchez is struggling to settle at his new club.
Alexis arrived in January from Arsenal, but has battled to find his best form.
The Daily Mail says staff have been surprised by his miserable demeanour at the club's Carrington training ground where he cuts an unhappy, isolated figure and often eats alone in the canteen.
Some say he comes across as a player who is having second thoughts over his decision to join United in a swap deal for Henrikh Mkhitaryan. They have drawn comparisons with Angel Di Maria.
A source said: "He looks like someone who doesn't want to be here.
"The whole thing doesn't seem right and he looks like a lost boy. It was the same with Di Maria."