Bournemouth have been sniffing about too (Knuts is 8-1 and Di Zebra 16-1). As Dyche has become the firm favourite, Knuts odds have lengthened.
Norwich also got very interested: https://youtu.be/L0Nz4VHrA9Q
I think the problem for EPL clubs (including Watford) is being turned down by Knuts...