>>>>Liverpool V Man Utd in October last year, most free to view.
How do you know most were "free to view". Every country will have its "Sky" or "ESPN" equivalent which charge people to watch matches.
And the reason the Premier League is the most watched in the world is that the money from TV (Sky, ESPN, BBC, ITV) goes to the clubs to allow them to buy players like Aguero, Rooney, Van Persie, Suarez, Andy Carroll (ha ha) etc
If the TV football money was not being pushed into English football those players would soon go to Spain, Italy, Germany etc. and the Premier League would soon stop being the most watched in the world.
Anyway it is ITV and ESPN who have the FA Cup coverage this year so matches will be on those channels. As has been said, the match in Question if "free" to watch today on ITV.