British soccer TV is bizarre.
I'm pretty sure the United game was the only game in England on TV at that time:
http://www.wheresthematch.com/tv/home.asp?showdatestart=20170107&sportid=1
And it was only on during the start of the Edinburgh XC race. By the end of the Edinburgh broadcast there were NO English games on TV despite the fact nearly every English soccer game was being played live at that time. (Fans in the US could watch two English games at this time between 4 no name teams).
The English like to encourage fans to go watch the soccer games in person so they have huge TV blackouts. Perfect time to put on another sport on TV.
And this was the FA Cup day so United wasn't even playing a top notch squad.