Everton club doctors are reportedly concerned that Jordan Pickford's recent thigh injury could be down to his powerful kicking.
The Englishman sustained the injury during the draw against Liverpool in the Merseyside derby, but he was still able to put in a man of the match performance in the 0-0 draw at Goodison Park.
Everton released a statement saying that Pickford will be out of action until after England's next set of fixtures.
It said: 'Jordan Pickford suffered a thigh injury against Liverpool.
'The England international has undergone medical investigations this week and is not expected to return to action until after the next international break.