Two years ago Moyes replaced Bilic as Hammers manager and led them to survival, but the Scot has inherited arguably an even worse situation in his second spell in charge following Manuel Pellegrini's sacking last month.

But Bilic insisted: "David can do it. The players have to do it. They have done it before and they have to do it now.

"Now what is very important is the crowd recognise the situation, be behind the team and be behind the club."

Nevertheless, West Ham look like a club in freefall. They are above the relegation zone only on goal difference and face a visit from champions-in-waiting Liverpool on Wednesday night.

The transfer window is providing a familiar source of frustration, so Moyes will have to look within his current squad for inspiration.

Last time around he transformed Marko Arnautovic from sulky winger to prolific centre-forward, but the Austrian has long since departed.

"I came with the same problem last time, we were in a difficult position and it has not changed," said Moyes.

"What I need to do is find something which can give us inspiration. For example the last time Marko Arnautovic gave us inspiration, someone who could score, who we could play in behind. He gave us a runner, something different.

"But the one thing you have to be is hard to beat. If you're not hard to beat then the other team will find opportunities to score against us.

"At the moment we don't necessarily look like we have got loads of goals, so we have to find a way to be much tougher to beat at the moment, and we were too easy to play against."