According to reports in various British tabloids,
Manchester United's Cristiano Ronaldo and Newcastle United's Steven
Taylor went head-to-head in the tunnel during the half-time break
on Wednesday night.

Towards the end of the first half at St. James' Park, the Magpies
defender appeared to have struck the Portuguese winger in the face
when challenging him for the ball.
However, referee Steve Bennett seemed to have either missed the
incident or not deemed it too serious as Taylor was only shown a
yellow card.
The Sun claims Ronaldo responded by telling the England
Under-21 defender, "Your style of football is s***," to which
Taylor replied, "Well, you are ugly!"
However, the Daily Express reports that it was Wayne
Rooney who told the 23-year-old centerback, "You’ve always been a
s*** footballer."
The 6ft 2in defender's response to 'Wazza' is said to have been, "I
might be a s*** player but at least I’m not ugly like you. You’ll
always be ugly."
Either way, it is thought that there was a clash between the
players that could be investigated by the FA if the referee
included it in his match report.