I'd say you'd be in a worse position if you withdrew your interest and ended up with Unsworth. If his head has been turned, we coped pretty well with that yesterday so I have faith we'll be okay. Thanks for the concern though.
All joking aside I'd be very surprised if this happened (though hearing contradictory reports). My take of it, for what it's worth (feel free to put your stance).
1) Silva would be interested in at least talking to Everton.
2) Watford fans are surprised, as well as justifiably upset at this. In no small part is this down to Everton's inability to communicate it's vision, and opportunities it may or may not have via Moshiri.
3) Watford have a value of a manager that is significantly higher than standard release clauses for managers, reflecting the centrality he has had to the strong performances this year. You could put an argument, at this moment he is priceless to them, with it being mid season.
4) For Everton, he is a strong candidate of a number they could speak too. It doesn't neccesarily make sense to pay £15+ million for someone they could get very cheaply in the summer.
5) For Silva, he could try the nuclear option of resignation. He runs the risk of 6-18 months gardening leave (like 6 given the break clause n the deal). This is not likely to benefit him in any way. Positive performances for Watford will, so there is incentive to stay and continue doing well. It's strengthens Watfords hands.
6) Silva I think senses this is his moment to get the Everton job. In the summer, with Everton (Hopefully) safe, a huge amount of money, 3 months to rebuild they are a more attractive prospect. Likewise more candidates are available, particularly Tuchel & Ancelotti who will be more open to approaches, as well as even Simeone. Silva would also be a strong candidate but by no means the top choice.
Thats my summation. All I can see changing it, is if a figure that EFC are prepared to pay for an early release, can match to a figure Watford feel represents too good value for money to turn down for a manager who may go in 6 months.