Martial is sidelined again through injury while Weghorst has only scored once so far.
The Cottagers are flying high in the Premier League and looking to reach the last 16 in the cup.
The sought-after Spanish coach Carlos Corberan has signed a new long-term contract at West Bromwich Albion after talks broke down with Leeds United over the length of a potential deal.
The Arsenal forward is recovering from an ACL injury while also dealing with the death of her mother.