Mateo Kovacic will miss the first leg of Chelsea's Champions League semi-final against former club Real Madrid on Tuesday through injury.
The midfielder has missed the Blues' last three matches with a hamstring problem and it had been hoped that he could return against Los Blancos.
However, Thomas Tuchel dashed those hopes prior to his team's crucial trip to West Ham.
Mateo Kovacic will miss the Champions League semi-final first leg against Real Madrid
'Mateo Kovacic is still out, but the rest are available.