"It depends on the physios and the doctors, but I don't have any problem with him going because it will be a fantastic opportunity for him to say hello to the Atletico fans," Benitez told liverpoolfc.tv.
"He is really disappointed that he won't be playing. He was desperate to play in Madrid in the Champions League, so it's a pity."
But Benitez added: "The Portsmouth game could be a realistic target but it always depends on the player with injuries. It's now a question of time."