Crystal Palacevs.West Ham

The Hammers make the trip across London on the back of suffering a 3-1 aggregate defeat to Bayer Leverkusen in the quarter-finals of the Europa League, drawing 1-1 at home in the second leg on Thursday night.

David Moyes's side were boosted by the return of star attacker Jarrod Bowen, who was thrown back into the starting lineup against Leverkusen after missing the previous two matches with a back issue.

Bowen provided an assist for Michail Antonio to open the scoring in the 13th minute, and the Englishman went on to complete the full 90 minutes at the London Stadium.

However, there are questions marks over Bowen's availability as well as four other Hammers players for Sunday's encounter with Palace, according to Moyes.

Five West Ham players to be assessed ahead of Palace clash

Nayef Aguerd started against Leverkusen, but hobbled off with an ankle problem on the stroke of half time, while Konstantinos Mavropanos (ankle), Alphonse Areola (groin) and Kalvin Phillips (hamstring) were all absent in midweek due to injury.

Providing an update on his squad at a press conference on Friday, Moyes said: "Jarrod's always quite robust, but I know he was really touch and go for last night's match, and he was really close to not playing.

"He took an injection before the fixture, so we'll need to see how he is and how he's reacted to that. It was a big boost to have him back, as it is whenever your big players are available to play.

"Nayef went over on his ankle, but we've not had the chance to assess him yet. Him and [Mavropanos] are both set to be checked, and then we'll know more ahead of the weekend. It's the same situation with Alphonse and Kalvin."

Moyes issues positive update on George Earthy

On a positive note, Moyes has confirmed that teenage midfielder George Earthy remains sidelined but is recovering well after sustaining a nasty head injury on his Premier League debut against Fulham last weekend.

The 19-year-old collided with teammate Edson Alvarez less than 10 minutes after coming on as a substitute in the 2-0 defeat at the London Stadium, and he was stretchered off before being sent to hospital to receive treatment; the midfielder has since been discharged.

"George Earthy's great," Moyes added. "He was in watching training the other day. He looks fine, but we're following all the protocols required and he's not back with us just yet."

Meanwhile, West Ham will be able to welcome back both Lucas Paqueta and Emerson Palmieri this weekend after they were forced to miss the midweek draw with Leverkusen through suspension.

"The two boys who were suspended are available again, which is good," said Moyes. "When we're at our strongest we're always confident we can get results, so hopefully we have as many players back with us as possible."

West Ham currently sit eighth in the Premier League table, two points behind Manchester United in seventh and Newcastle United in sixth having played a game more than both clubs.