I would like to see him instead of Marusic and not playing as an CB! 
Yeah, I mean why isn't this an option?
Because Caceres is not a wing-back.
Caceres made some good overlapping runs in the World Cup, but there's nobody to overlap with in a 3-5-2 so he offers nothing going forward for Lazio. He can't take people on and his crosses make Candreva look like David Beckham.
What made Caceres a great defender for Juventus was his ability to read the game and his pace and physicality. Well, his pace is gone and as for his physicality, according to the FIFA website, he had 0 successful tackles in the World Cup and he loses more balls in the air than he wins nowadays.
He's not done, but he's not the player he was. Even his game-reading skills seem a bit wayward after barely playing in 3 years. That's the area that could come on with games and if you limit his role on the pitch, you could get something more out of him.
But the guy we saw at Juventus and many of us coveted for years is not coming back. And that guy only ever played right wing-back 3 times in his career. That guy, I'd consider over Marusic and would play every week in this Lazio team. The current guy, no.