Gary Neville says only Ashley Barnes will know if he meant to hit Toby Alderweireld with his header which drew blood from the Belgian.
The incident happened early into Burnley's game with Tottenham as the pair jumped and contested for the same ball.
Barnes looked to fend off the centre-back while competing for the ball in the air and catched him flush on the eyebrow, drawing blood.
Play stopped for several minutes as the Belgian had a swab applied to the cut and was patched up leaving him with a white headband for the rest of the game.