Senegal pair Chiekhou Kouyate and Diafra Sakho are likely to be required along with Cameroon defender Alex Song if the competition goes ahead.
But the biennial competition – scheduled to be held between 17 January and 8 February 2015 – could now be postponed after the Ebola outbreak.
Sources inside West Ham are monitoring the situation closely and are likely to only become involved after a decision is taken.
The BBC reported that the Morocco health ministry made the plea in the wake of their decision “to avoid events which involve those countries affected by the Ebola virus.