Watford defender Younes Kaboul has failed to recover from injury in time for tomorrow's game at West Brom.

The centre-back limped off with an injury during the first half of last weekend's defeat to Stoke City.

Hornets boss Walter Mazzarri hoped Kaboul would be available for the Baggies clash but he has not travelled with the squad.

It means Watford are likely to switch to a four-man defence with Miguel Britos also ruled out through suspension.

But talented forward Isaac Success has travelled with the group and could make his first appearance since the win at Middlesbrough in October.