Roberto Pereyra's leg injury suffered in yesterday's defeat at Manchester City is yet to be fully assessed - but Walter Mazzarri has suggested it is 'not minor, not serious'.

Pereyra looked to have twisted his knee as he went down at the Etihad Stadium, and was swiftly replaced by Camilo Zuniga for the final hour of the loss.

Daryl Janmaat will be fit to return to the Hornets' starting 11 after being forced off after the break, with Younes Kaboul also now ready to start, but Stefano Okaka and Craig Cathcart will both miss out.

Mazzarri said: "We still have to wait for some evaluation of the MRI scans on Pereyra, then we will be able to give an answer after the next game.

"It won’t be too short. From my experience, I have a feeling it is not a terrible injury, but at the same time I also think that it’s not particularly minor.

"We are looking to get back some of the players, for example Younes Kaboul - and Isaac Success is starting to get better.

"It is not easy, but we need to be careful in the next matches, give everything and the players who don’t normally play can perform in the best possible way."

Last weekend, Valon Behrami revealed the close-knit nature of this season's dressing room - no mean feat with a number of players not even making the Hornets' 25-man Premier League squad - and Mazzarri revealed how he had managed to keep his side happy.

He said: "I have been lucky because to manage a group like this, and to make the decisions I took, we have had many injuries – it made life easier.

"But aside from joking, I would have preferred to have all the players available. I always speak to them face to face, and they have known why they don’t play and why they do.

"I tend to tell them everything, and if I could have had all of the players throughout the season, we could have had more points."