I think there's value in Watford to win and BTTS @ 4.5 tonight against Arsenal.
Arsenal are dire away from home and Watford won't be relaxing just yet. They'll want to stay sharp and build momentum before the FA Cup Final next month and playing well against the bigger teams will give them hope they can topple City in the final. Not to mention they're currently 10th but with two games in hand on Leicester and one on Wolves, they'll want to get back into that 7th position. It's a great achievement for whichever team ends the season in that position given how good the top six are.