Gestede could play in Saturday's match at Stoke City after recovering from a hamstring injury, but Grealish, Libor Kozak and Carlos Sanchez have all been ruled out.
The Whites travel to the Amex Stadium to face one of the sides currently chasing promotion in the Championship.
Britain's biggest banks narrowly avoided a major legal challenge today, when a High Court judge dismissed a case relating to the mis-selling of rate swap products.
Lazard has announced that Peter R. Orszag will join the firm as a Managing Director and a Vice Chairman of Investment Banking, effective May 16. Based in New York, Orszag will advise clients on mergers and acquisitions and other financial and strategic matters.
Lloyds Banking Group has given its chief executive an £8.5m pay deal as the bailed-out bank reported a 7% fall in profits, but also announced a special dividend payout to shareholders.
Sunderland's development side are currently sitting on top of the under-21 Premier League table.
The pundit has been previewing Queens Park Rangers' clash with Birmingham.
Milner joined Liverpool from Manchester City on a free transfer in the summer.
Diego Fabbrini made his first Birmingham City start since signing permanently in midweek.
The Sunderland boss will be reunited with West Ham's supporters on Saturday afternoon.