Facebook have confirmed that they have no current plans to bid for the Premier League. There was speculation that they may have been planning to bid for the rights to show Premiership zFootball on their new 'Watch' service.
I think YouTube is of the same mind, although I haven't been aware of a firm denial from them.
I still think the most likely competition in this area will come from Amazon, Disney or Discovery, but early days yet. A lot can happen in three years!
https://advanced-television.com/2018...er-league-bid/