I didn't find Pellegrini's press conference that clear on Navas. He said he had a kick behind the knee and it wasn't serious. But did he rule him out of the game? Wasn't clear to me that he did, but the journalists have said he's not available
MEN transcript for injuries reads as follows
What is the injury situation, Manuel?
Pellegrini: Injuries for tomorrow is Jesus Navas has a little problem, just a precaution, a kick behind his knee but nothing important.
Jovetic and Aguero are injured and Rodwell, all three can’t play and cannot play tomorrow. Richards can’t play, he is not injured, he must work a little more but he is not injured and Demichelis is in the squad list.
I'll have another go based on the latest info
---------------------------Hart
Zab------Kompany-----Nastasic---Kolarov
------------------Fernandinho--Yaya
------------Milner------Silva-------Nasri
-----------------------Negredo
Subs: Pants, Navas, Demichelis, Clichy, Dzeko, Lopes, Garcia
West Ham are going to park the bus, so it will be a blow if Navas is out. Even though Pellegrini says he has a kick behind the knee, I suspect he could be on the bench as his width and pace might be important to get behind the WHU defence.