Watford midfielder Roberto Pereyra serves a one-game ban but Daryl Janmaat is back after missing out last weekend following a clash of heads in training.
Miguel Britos and Valon Behrami both return from suspensions, but Craig Cathcart remains sidelined by injury.
Everton will be without Yannick Bolasie for the first time this season because of a knee injury which could rule him out for the rest of the campaign.
However, Seamus Coleman is fit despite suffering a head injury last weekend.
Martin Fisher: “Two clubs that have lost their way in recent weeks and their hopes of turning things around with victory in this one have been hit by the loss of key performers.
“At least Watford will only be without Roberto Pereyra for one game now, the loss of Yannick Bolasie for the season with a knee injury is a huge blow to Everton.
“Dropped last week, opportunity should knock again for Ross Barkley as the Blues aim to extend their incredible record against a Watford side whose once lethal strike partnership of Troy Deeney and Odion Ighalo appears to have gone AWOL.
“Both meetings finished all square last season and I wouldn’t bet against a third draw in a row.”
Everton manager Ronald Koeman on Romelu Lukaku’s form: “You can have a good run of scoring goals and then have a bit of time where you don’t really get big chances to score.
“The players around him need to create more and he can improve in his movements – it’s a team question to create more chances. But if he gets the chances, we always know he will score goals.”
Everton might have nicked a late point against Manchester United last time out but their form has really hit the buffers.
For me, Everton manager Ronald Koeman is waiting for the transfer window to open to sort out some of the issues in his squad but he needs some wins before then.
I think he might get one on Saturday. Watford have had a bit of a dip recently too and I am backing Koeman to get a much-needed win.
SAM (Sports Analytics Machine) is a super-computer created by @ProfIanMcHale at the University of Salford that is used to predict the outcome of football matches.
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