Well Jemerson has been really bad in the last 18 months, Sidibé is probably done, Glik is alright but not as good and Benaglio plays like a good backup but still a backup. And that's not even the main issue, the problem is with the players in front of them.Looking at who they played tonight though:
Benaglio- Experienced international. Don't think he's that much worse than Subasic.
Sidibe- Was highly rated 18 months but seems the injury has disrupted his game?
Gilk- Rate him highly but seems to have been affected by the malaise.
Jemerson- Had a few Brazil call ups in recent years.
That's not far off the defence they've had last few years. Can only think losing players like Moutinho and Fabinho makes them far more exposed than before and they obviously haven't got the quality in attack to outscore teams anymore.
I've said before but Falcao desperately needs pace either side of him otherwise he just gets isolated upfront like he did under LVG.