Ndibe is of the opinion that the president should consider handing in his resignation letter because of his ill-health.
''I'm aware that some Nigerians still consider Mr. Buhari essential, if not indispensable, to our country's prospect of rebirth.
''To these, a suggestion that the man ought to quit office must sound heretical—indeed seem like a prescription with a dollop of ghastly mischief. But such people are grandly deluded,'' he wrote.
''And two years of Mr. Buhari's tenure as president are adequate to demonstrate his paucity of ideas,''
He suggested that the president's reputation and goodwill are enough, saying what Nigeria needs is robust and organic ideas
''If Mr. Buhari's government has not been able to prosecute Mr. Dasuki to date, is there much hope of his administration making a noticeable dent in the war against corruption via prosecutorial means? I don't think so.''
He also accused the president of not taking any steps when political appointees close to him have been accused of corrupt acts
''If the Buhari brand ever represented antipathy to corruption, that image is now profoundly tarnished. At its core, corruption in Nigeria remains as vibrant and resilient as ever.
''If there's a scaling back in levels of embezzlement, it owes less to the Buhari effect than to the significant decline in oil revenues,''
''He can hardly do so while shouldering the burden of running a complex and beleaguered country. Besides, Nigeria is beset by grave crises that appear to worsen by the day.
''Nigerians deserve a leader at the height of mental and physical fitness, a president endowed with the agility and energy to wrestle with his country's deep-rooted problems.
''The trouble is not just that Mr. Buhari is enfeebled by age and illness. The greater issue is that he presides over a country that is manifestly sicker than he.
''The idea that an ailing man can effectively mind the business of a more seriously sick country is, quite simply, absurd.''
He also queried the president's war on corruption, lamenting that the Buhari's administration has failed to achieve the conviction of one significant political figure from the recent past.