Ouseley called on Crouch and the prime minister, Theresa May, to continue to push for a "harder-edged" solution.
McDermott, 35, is replacing the 68-year-old Jim Johnson, who took an indefinite leave of absence in May to continue treatment for a cancerous tumor.
McDermott, a defensive assistant for the past eight seasons, succeeds Jim Johnson, his mentor, who took an indefinite leave of absence in May to continue treatment for a cancerous tumor on his spine.
The industry claimed on Monday that it has the backing of the culture secretary, Maria Miller, who urged publishers at the end of May "to continue with the work to set up the independent self-regulator as quickly as possible".
Despite making it clear previously that they have no wish to return to the show without Clarkson, an attractive offer to return has reportedly been made to Hammond and May to continue for another two or three series.
When the leaders of the Bowl Championship Series voted last May to continue with the current system of a poll and a two-team championship game, Paterno was critical: "To be frank with you, I don't know what the reasons are not to have a playoff," Paterno said.
