Mandel put the request for the 1:30 p.m. meeting to city council late Monday night.
The mayor would not offer any specific details about what will be discussed.
"At that point in time, I think it's out of respect for council that they see the information, they make a decision ... everything will be in public tomorrow but that's the time to do it," he said.
City councillors are expecting new information on funding.
"It's the mayor's role to call the meeting (when) he's got something to present to us so we'll see what it is," said Coun Don Iveson.
"I think we probably (would) like it wrapped up at some point in time and tomorrow would be a good day," said Coun. Tony Caterina. "We all have the same anticipation that at some point in time we'll actually get this completed regardless of which direction it goes."
Last week councillors deferred a crucial vote on the $480-million arena until city administration could return with a report outlining how the city might make up a $55 million shortfall.
Council would vote on a new recommendation as soon as possible, Mandel said last Wednesday.
On Thursday the Capital Region Board voted to supports the city's application for a grant of $25 million under the province's Regional Collaboration Program, which is set aside for municipalities wishing to collaborate on a regional projects.