Cities and Local Government Devolution Bill [HL]

I know that the Minister is doing her best and this is absolutely no criticism of her, but we are getting very discordant messages from the Commons end and the Lords end. I am no more clear now than I was an hour ago whether, if an area wishes to be a combined authority and exercise certain powers to promote the national agenda of economic growth, a mayoralty may be a condition imposed on it by the Secretary of State.