article_snippet: The 25-year-old fell awkwardly in training on Thursday and left the field in considerable discomfort.
article_snippet: Manager Sam Allardyce only announced at lunchtime that striker Enner Valencia was out after cutting Manager Sam Allardyce toe on a broken tea mug.
article_snippet: The in-form West Ham defender suffered the injury during training and left the field in discomfort . '
article_snippet: The 25-year-old was taken for hospital treatment and will continue to be assessed by the club's medical staff.'
article_snippet: James Tomkins news is compounded as Winston Reid has a hamstring injury and is already ruled out of the Arsenal game while Carl Jenkinson is unavailable as Carl Jenkinson can't play against Carl Jenkinson parent club.
highlights_snippet: The 25-year-old defender could miss the rest of the season .
  
highlights_snippet: Winston Reid and Carl Jenkinson are also unavailable against Arsenal .