I don't expect Lazio to act in any winter market where we are in contention for a Top 4 placing, however, this indecision regarding who to play with Radu or Acerbi needs to be solved for the sake of our season.
Luiz Felipe plays well midweek, he gets the nod, makes a crucial mistake, now Wallace probably gets the nod, he'll make an error within 3 games, Luiz Felipe will be back in again.
And it seems Inzaghi has given up on Bastos and Caceres as centre-back options, which I have also done.
I think the only way we solve this is with a new signing and while I don't expect that to happen, if we're serious about a Top 4 push, this is one of the few occasions I'd argue that Lazio have to act.