England midfielder Kalvin Phillips needs "support and people to help him", says West Ham manager David Moyes.
The 28-year-old was allegedly caught making an offensive gesture to fans while getting on the team bus after Saturday's loss at Newcastle United.
"We need our fans to give all our players the support they require," Moyes said.
Phillips is on loan to West Ham from Manchester City until the end of the season.
"Kalvin's a human being and what he needs is support and people to help him, which is what we'll do," added Moyes.