Through four games, the Bulldogs have been outscored 13-8 by their opponents.
The Wolverines racked up 10 penalty minutes in the first, giving Union six power play shot attempts and one goal.
Union outshot Michigan 40 to 23 as the Wolverines lost their season opener.
Sunday’s matchup will serve as a perfect opportunity for head coach Red Berenson to see what his freshmen bring to the table.
The Wolverines’ captain had a stellar 2015-16 campaign, tallying 16 goals and 47 assists to finish second on the team in scoring.
Michigan ended its season with a 5-2 loss to North Dakota on March 26.
After only one season with the Wolverines, Connor signed a three-year contract with the National Hockey League’s Winnipeg Jets. The Jets drafted Connor this past summer with their first round pick (17th overall).
Connor was unable to join the ranks of the Wolverines’ other two Hobey Baker winners — Brendan Morrison and Kevin Porter.
Berenson’s contract expired after this past season, and Manuel said Friday that the two sides are working to develop a new deal.
Wednesday, Michigan coach Red Berenson told the Daily the junior Tyler Motte will forgot his senior season in order to sign with the Chicago Blackhawks organization.