ROME, Feb 8 (Reuters) - Zlatan Ibrahimovic is like a caged lion as he fights to regain fitness, but the Swede will be unavailable for AC Milan's Italian Cup quarter-final against Lazio, coach Stefano Pioli said on Tuesday. He is doing everything to recover, he won’t be ready for tomorrow but we will see about the next games,” Pioli told Sport Mediaset. "The concrete objective is to eliminate Lazio tomorrow. That will be a difficult obstacle, they are in good form and won a great match against Fiorentina on Saturday. We will focus on tomorrow’s match and then go one step at a time," Pioli said.