No.
The chemistry isn't there. This team lacks the culture of winning, the all out commitment to Super Bowls, nothing less. They lack focus, the mentality that nothing will hold them back. They don't have an identity, the "All for one, one for all" togetherness that is most often a characteristic of championship teams.
This team needs to be led by by true leaders that demonstrate their determination by their actions. I think they have all the ingredients, they just need the right cook. I don't believe in McCarthy, but would love to be proven wrong.