Chris Coleman makes two changes to the side which drew 1-1 with Sheffield Wednesday on Tuesday.

Star midfielder Jay Tabb has a virus, so Isaac Osbourne comes into midfield. Leon Best returns from suspension and he is preferred up front to Michael Mifsud, who has to be content with a place on the bench,

Watford: Lee; Shittu; Sadler; McAnuff; Doyley; Williamson; Kabba; Ellington; Bromby; Smith; O'Toole

Subs: Poom; Stewart; John; Mariappa; DeMerit

Coventry City; Schmeichel; Duffy; Ward; Dann; Fox; Osbourne; Doyle; Hughes; Gray; Best; Simpson.

Subs: Marshall; Thornton; Mifsud; Hall; Hines