Watford continue to wait on a specialist's report to find out the full extend of Danny Welbeck's latest injury.
Their new summer signing striker limped off with an ankle injury after just 100 seconds of the Hornets 1-1 draw with Spurs on Saturday.
Welbeck joined Watford from Arsenal on a free transfer after spending the final part of his Gunners career on the treatment table with a broken ankle sustained against Sporting in the Europa League.
But speaking to the club's website, head of injury prevention and rehabilitation Alberto Leon admitted that the first signs are not promising.