Piijt
Player Valuation: £20m
Uefa is to experiment during the group stages with having five referees per match in an attempt to combat players' diving to win penalties and to help resolve other issues. Two extra officials will stand next to each goal, behind the dead-ball line, to spot infringements and Uefa hopes the move will mean less foul play and simulation by players.
The move is also designed to help determine whether the ball has crossed the goal-line when there is doubt.
Uefa president Michel Platini said: "One day players will give up simulating because referees will see them.
"For years players have cheated because the referees were not of a good enough quality.
"I am convinced, with the extra officials, that if you have referees close by it will prevent players from simulating and they will take the right decision.
"I have always said it is better to have more referees than a multiplication of disciplinary procedures or to refer to videos during matches."
The move is also designed to help determine whether the ball has crossed the goal-line when there is doubt.
Uefa president Michel Platini said: "One day players will give up simulating because referees will see them.
"For years players have cheated because the referees were not of a good enough quality.
"I am convinced, with the extra officials, that if you have referees close by it will prevent players from simulating and they will take the right decision.
"I have always said it is better to have more referees than a multiplication of disciplinary procedures or to refer to videos during matches."