By Noel Whelan

12th Dec, 2020 | 2:55pm

'Moyes' Worst Nightmare' - Exclusive: Pundit reacts to huge West Ham Instagram reveal

West Ham have been hit with a huge blow as Arthur Masuaku was ruled out for the foreseeable future after he underwent knee surgery this week.

That is according to former Premier League forward Noel Whelan, speaking exclusively to Football Insider assistant editor Russell Edge about the 27-year-old’s start to the season.

Masuaku revealed on a now deleted Instagram post he had undergone career-saving surgery on his knee that has been an issue for nearly two years.

The DR Congo international has started 10 of West Ham’s Premier League games this season and had played a key-role at left wing-back in Moyes’ 3-4-3 formation.

Moyes switched back to a back four without Masuaku against Leeds United on Friday night with Aaron Cresswell moving from his left centre-back role to a more natural left-back role.

Asked by Football Insider whether it was a big blow to be without Masuaku for an extended period, Whelan said: “It is.

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“When you lose anybody long-term who has been a regular in your side it can mess with the way you play and the way you set up and your continuity.

“Nobody ever wants to lose a player for a long spell, it’s a manager’s worst nightmare.

“You can deal with niggles but long-term that’s when you need to think ahead.”

Masuaku’s extended role in the side this term is a sharp contrast to his role at the end of last season when he featured just twice after the Premier League restarted in June.

Cresswell was firmly-established as Moyes’ first-choice left-back and has missed just one West Ham league game in 2020.

In other West Ham news, a top pundit has claimed the club could make a contract U-turn after Antonio reveal.