Tottenham coach Mauricio Pochettino is "worried" about the injury suffered by Harry Kane towards the end of Sunday's 1-0 defeat at home to Manchester United.
Spurs were unable to make the most of their second-half superiority at Wembley and succumbed to Marcus Rashford's first-half strike, with Kane among the players to be kept at bay by an inspired David de Gea in the United net.
The Spain international made 11 saves, including several to keep Kane out, as Spurs were frustrated.
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With the hosts piling the pressure on at the end, Kane came off worse in a heavy collision on the edge of the box, leaving him in a heap.