He has never changed though! what do you want? a keeper who command his box or a keeper who is excellent at shot stopping? nobody can deny what an excellent season he has just had and Gio is obviously is happy to give him another year on his contract!.
Also the rest of the players know his strengths and weaknesses and are confident in him, it's not as if the players expect him to come for crosses, they do communicate on set plays!.
What blunders does he make that any other keeper doesn't make?. No other keeper makes as many crucial saves than he does consistently!.
His performances last season, especially in the EL, proves he is still a top quality keeper hence Gio handing him another year.