A fair few of them want don't want him to succeed, even if it's to our detriment within reason.
From the perspective of those who want him to stay for at least another season, since we signed the players we so badly needed in January we've won 5 out of 9 in the league, including 4 out of 4 at home and progressed past two good sides in the EL. A lot of people were saying the signings would present a definitive test for him. You could argue that so far he's passing it.
Who's said that?
Nobody's come out and said it, dude. Just the way some posters go on makes it virtually impossible to believe otherwise.