The Frenchman was forced off during our recent 2-1 win over Everton on 9 October, and has played no part in the subsequent fixtures against Omonia Nicosia, Newcastle United and Tottenham Hotspur.
In an interview that you can read in full on Saturday morning, Ten Hag told club media that Martial will also be absent from this weekend's fixture at Stamford Bridge.
“Martial? He was on the [training] pitch, but he's not available for tomorrow,” revealed the boss. “We have to see how it develops in the coming days.”
Cristiano Ronaldo will also miss this weekend's match, as per a club statement released on Thursday.