Dean has firmed as a likely starter for Craig McRae's first game in charge of the Magpies, with veteran key defender Jordan Roughead having required surgery on his shoulder this pre-season.
Roughead is set to miss the opening rounds of the home and away season, opening a place for Dean to make his debut just four months after being selected by Collingwood in the Rookie Draft.
After claiming the Fothergill-Round-Mitchell Medal as the VFL's most promising player, Dean quickly gained attention from AFL clubs, with the Magpies swooping on the key defender's services.
Dean's dream of lining up for the Magpies in Round 1 has been scrapped, with the 20-year-old requiring scans on a foot injury sustained this week.
It is understood that Dean could face multiple months out of action, likely placing further headaches on McRae's planning for his side's season opener.
“We will know more once Charlie has seen the specialist but we are expecting that his recovery will keep him out of the selection frame for a number of weeks,” Collingwood GM of Football, Graham Wright, said.