Abbiati is still better than Chimenti.
He is very insecure when coming out and dealing with crosses, but he is much bettar at shot stopping and one on ones than Chimenti, and having to chose between the two I'd always choose Abbiati as the lesser of two evils.
I think we'll be fine until Gigi recoveres, we have an easy CL group, so that shouldnt be a problem, but we'll have to tighten up in defence in Serie A.
Still, Abbiati is a much better solution than Chimenti.