With Milan in CL when they need basically two top-quality players for more or less each position on the field, no, I'd not be happy if one of those spots went to Pazzienza.
Juve, being out of CL, however, will not have enough important games to deal with so having Pazzienza as a back up is more than fine as he is one player who is unlikely to complain due to spending too much time on the bench, while being good enough as a reliever.
And the guy came for free, with low wages ...