The Hammers sold Diafra Sakho and Andre Ayew out in the January transfer window and they now have six players of African background in their first-team setup, including Cheikhou Kouyate [Senegal], Pedro Obiang [Equatorial Guinea], Angelo Ogbonna [Nigeria], Arthur Masuaku [DR Congo] and Edimilson Fernandes [Cape Verde].
The Hammers have acted swiftly to remove Henry from his position pending the outcome of a full investigation into the revelations.
Cheikhou Kouyate, West Ham's Senegalese midfielder, wrote on Instagram Thursday that he is "African and proud".
While Henry suggested that he has nothing wrong with people of African descent, he felt that the club should not sign African players due to the way in which Sakho behaved.
The Daily Mail claimed Mr Henry sent the email on 27 January to another senior West Ham official and an agent in response to an inquiry about a Cameroonian footballer.
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The players' union said West Ham's swift action against Henry was "encouraging".
Henry said: "We don't want more Africans, he's not good enough".
"It's just sometimes they cause a lot of problems when they are not playing, as we had with Diafra".
"We were signing two players from Africa on deadline day so I can only say they are wrong".
Despite netting 24 times during his Hammers career in 70 appearances in all competitions, both within the starting line up and from the substitutes' bench, the Senegal international's career struggled to really find consistent momentum in east London.