The 25-year-old winger has been struggling to get into the West Ham team since joining from Nottingham Forest in the summer transfer window.
Antonio was one of the best players in the Championship last season, scoring 14 goals and creating 62 chances in 46 league appearances for the Reds.
However, the former Sheffield Wednesday man has played just 31 minutes in the English top flight for the Hammers, failing to score a single goal or create a single chance.
The Englishman was left out of West Ham’s match day squad for the Premier League game against Crystal Palace at Selhurst Park on Saturday afternoon.
West Ham co-chairman Gold has suggested on Twitter that there is no problem with Antonio.
Worried, are you mad! What's to be worried about. dg https://t.co/TUOZ5WSB4V— David Gold (@davidgold) October 17, 2015
West Ham defeated Palace 3-1 away from home to maintain their impressive run of form this campaign.
Slaven Bilic’s side are fourth in the Premier League table at the moment with 17 points from nine matches, just four points behind leaders Manchester City.