Blocking a free kick definitely should be a booking, otherwise players would always stop quickly taken free kicks and the momentum in a game would constantly be quashed. The player has already used a foul to kill momentum, but to break the rules twice to kill it is on the cusp of cheating really. Besides, it seems daft to lament the rules and not Juan Mata's stupid decision. It's the consistency that is the most annoying part. Both of Juan Mata's offences were bookings. But Gardner committed four fouls yesterday, one of them stopped Memphis bringing the ball in to the box. It stopped an attack and it was a clear attempt to stop the man and not the ball. He did the same to Lingard in a similar position too. Why wasn't he booked? There'll never be true consistency with each decision as every offence is different, but Mata rightly got a booking for committing a foul on Fletcher whilst Fletcher was in his own half. Gardner committed fouls to stop an attack right at the edge of his own box. Memphis had space to run into and Gardner knew it. Lingard was about to cross and Gardner knew it. He stopped both by bringing the attacking players down. Fletcher being tripped in his own half was deemed worse than both Memphis and Lingard being fouled when about to bring the ball in to the box. I don't get how a referee can measure one against the other so erratically.