Grennan, who is originally from Bedford, said: “I’ve got such a connection with Coventry.
“I feel like I’ve just been taken in as one of your own.”
His association with the city comes through his grandmother, who lives there, but he said “the attitude that Coventry people have is my same attitude”.
The upcoming tour does not include a show in Coventry and he said he had received a lot of messages from people asking why not.
“I just wanted to make sure we were doing something in Cov because I know how many people wanted it,” he said.
Grennan said the limited ticket numbers would make the show “intimate” and he hoped it would give his fans a taste of the preparation involved in a big tour.
He promised to perform requests from the audience and chat to people.
He also said he wanted to “hear their take on the album” and his planned set list for the tour, to inform his decision-making.
Ticket bundles are being sold via Crash Records.