We should first decide on what formation / tactics we are gonna employ.
We also have to decide what's going to happen with Ferrara: will he be replaced; is he staying to finish the season; is he our long term plan; ...?
Also, it's not like we don't have enough players as it is, so getting rid of player X who has just 5 appearances, in order to replace him with player Y who is then in turn going to play 5 games does not make any sense to me.
I'd rather invest in new players that are an upgrade for the 1st team, instead of getting improved backups anyway.