The Hammers enter this contest on the back of a disappointing 5-2 away defeat against Crystal Palace last weekend, a game in which they were four goals behind after just 31 minutes.
Top scorer Bowen, who has 19 goals to his name in all competitions this term, was a notable absentee from the West Ham squad at Selhurst Park, having returned in the previous match against Bayer Leverkusen from a back problem.
Aguerd was also absent due to an ankle problem picked up in that Europa League clash with Leverkusen, while Mavropanos has missed the last two games with a similar injury.
Moyes has since confirmed that Saturday's clash with title hopefuls Liverpool will come too soon for one player, but two other Hammers stars could be fit to return.
West Ham boosted by Bowen's return to trainingSpeaking at a press conference on Friday, Moyes said: «Jarrod Bowen is back training, so there is a good chance he will be available.
»We will still have to monitor him up until kickoff to see how he is, but hopefully Jarrod is back and fit."
«We've got a couple of issues with our centre-backs. Nayef [Aguerd] won't be available as he's not ready yet.
»Dinos [Mavropanos] has got a chance, so we will need to see how he is, but again it's pretty tight and is a quick turnaround in regard to the game being played at lunchtime. Hopefully they will be fine."
Teenage midfielder George Earthy is West Ham's only other injury concern; the 19-year-old sustained a nasty head injury against Fulham a fortnight ago and remains sidelined due to concussion
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