Watford could be handed a boost for their game at Arsenal on Sunday with the return of Francisco Sierralta.

The Chilean defender returned to full team training this week and will be assessed ahead of the trip to the Emirates.

Should he be available, it would be a welcome relief for the Hornets, who also have Kiko Femenia back after a hip injury ruled him out of the last two matches.

Watford are yet to keep a clean sheet this season, so having more defensive options will be seen as a big positive for Claudio Ranieri.

Further up the pitch however, Ken Sema has picked up a medial collateral ligament (MCL) injury, which has forced him to pull out of the Sweden squad for the upcoming World Cup qualifiers.

He will be joined on the sidelines by Kwadwo Baah, who has fractured his ankle and is set for further assessment.

Christian Kabasele is still unavailable due to his hamstring problem, while Peter Etebo is still a way off his recovery.

Emmanuel Dennis will be available again this week after serving a one game suspension.