The Michigan Wolverines and the rest of the college football world saw the re-opening of the transfer portal on Tuesday in a window that lasts from April 16-30. U-M still has a few days left of spring ball, but could look to add at any position they feel fortifies their chances of competing for a Big Ten title and spot in the 12-team College Football Playoff. With the dust settling on the first day, here are a few pertinent takeaways and things that may affect the Wolverines. 1. No surprise departures from MichiganMichigan has been pretty fortunate in the transition from Jim Harbaugh to Sherro…