The club is in the early stages of trying to discover the train of events which led to Stewart Downing playing 45 minutes against Scotland after receiving a pain killing injection in his knee.
A top Hammers source had told ClaretandHugh that the story was “110 per cent true” and that court action could depend on the FA accepting responsibility and paying compensation
The FA meanwhile are reported to be disputing the timing of the jab claiming is was not given to the winger to get him through the first half.
And the report adds that Roy Hodgson held talks with Hammers manager Sam Allardyce on the evening of the Scotland match, while the national team’s medical team has also spoken with their West Ham counterparts.
The Mirror quote and FA spokesman as saying: “Our medical staff always work professionally and with the highest integrity. Player medical care is always our top priority”.