Think anyone who watched Everton under dyche could see where the major problem sat, it was Keane.
We conceded loads prior to Keane your right, that's under a different manager though ( a very bad one )
The coady/tarky partnership had 2 clean sheets in 4 games ( average 1 goal a game conceded ) and conceded 1 at Brighton without him.
I won't count Manchester city because the are the world's best team and it really didn't matter who we had.
I think most people, myself included got angry when he refused to drop Keane after so many bad displays, he came in and dropped coady almost instantly ( he was playing very poorly so desvered dropping ) however Keane was costing us every single week but he played about 12 games straight.
I really think if mina had come in a few weeks prior we'd already be safe now.