Both players are out of the squad for Saturday’s FA Cup quarter-final at Coventry City.
“[Anelka] is not in the squad, we tried to get him available for the Juve game, but it will be close. We will see,” said Hiddink.
“Deco made progress in his training, but you have to be careful with muscle injuries. We don’t want to take a risk, nor does he, and he is not feeling fully confident to be in the squad today.
“We will see how he will react for the upcoming Juve game.”