At least Boris Johnson has not yet promised Chris Grayling a job – The Yorkshire Post says

Yet, while the former Foreign Secretary is the only one of the remaining candidates with any momentum, Mr Johnson’s campaign does continue to be bereft of statesmanship.

Power Up The North and why Boris Johnson and his Tory chums spell bad news here – Andrew Vine

His public appearances, now as rare as Mr Grayling’s interviews, remain carefully controlled to reduce the likelihood of gaffes. He rudely and contemptuously brushed off the six questions that he was prepared to take from the media at his launch event. And he has refused to confirm his attendance at forthcoming TV debates. These are not the actions of a leader who aspires to represent Britain on the world stage; speak for the nation at times of crisis; solve Brexit and unite a country that he has done so much to divide.

The questions of integrity that Boris Johnson must answer – The Yorkshire Post says

Quite the opposite. His avoidance of questions about his character, integrity and values point to a man who has good reason to be fearful of close scrutiny. And while there will inevitably come calls for Mr Johnson to be anointed now, it is, in many respects, even more important that an alternative candidate emerges in the coming days who can provide a necessary challenge to the ex-Mayor of London. For the whole country’s sake, it is far better that Mr Johnson is put to the test now before he is entrusted with the keys of 10 Downing Street.