I'm not going to argue with you guys that you should take Michigan's D...just going to give you some facts and clear up some misinformation:
1) Our DL/edge was super deap last year so it looks like we lost a lot. But look at who Michigan had on the field, at the end of games, during the stretch last year...4 of the 4/5 (we often played 3 down DL/interior with two edges and will again*). If you don't believe me take a look at one play...the final play against Bama...Stewart pushes the OT back 3 yards into the Bama QB, Graham and Grant crash the middle and Moore cuts off the wide side edge. All 4 are back along with another regular rotation DT and a couple guys who were true frosh, last year, that slowly got worked in as the season progressed and the situation allowed (we also have a top ranked edge then freshman recruit with a year in the system now). Our 3 best were all true-sophs with Moore and Grant (especially Grant) having more upside than Graham...these are big guys who took some time showing which is expected...they are now upperclassmen. Two of the guys we lost weren't chopped liver but listed as starters because they were seniors and while they played the 1st series they weren't always in on the last.
2) Yes we lost both starters but the thing that worries me most is those two played better as a tandem than they did individually. It was like they were in each other's brains. That is hard to duplicate. But the two guys "next up" are quite experienced. Hausman was a part of a 3 man rotation and in some games played more snaps than Barrett depending on match-up. Our big transfer portal get was a freshman AA two years ago (not a surprise as he was a high 4*) and missed a few games last year so no awards...but he was the best player on Maryland's D when they played us...gave us fits...so we went out and got him when he hit the portal. We also have Rolder waiting in the wings who got worked into the rotation, late in the year, after sitting with an injury (we waited to play him to preserve his RS and because we didn't need him). If the name sounds familiar it's because he was a late riser (no star to 4* during his HS senior year) that you guys went super hard after.
3) Baring an injury, Will Johnson will be a 1st round pick at CB. We return our 3 top safeties including Rod Moore who made all big ten despite missing the first quarter of the season. Yes losing Mike(y) at nickel is a blow and we have an open spot at the other outside corner. The heir at nickel is a kid we've been waiting on for a few years who had some injury set backs but played well in a backup role...yes he is the kid Sparty jumped in the tunnel (two years ago) and he got his revenge by having a pick 6 against them last year. At the field corner spot we have two guys battling who were true freshman last year. One got his feet wet as a backup last year and the other was the highest ranked recruit in that class. It is expected Michigan will bring someone in from the spring portal as insurance/competition
4) Someone brought up losing Minter (DC) to the NFL. I had a similar conversation on this board a couple years ago when we lost Coach Mac to the NFL (he's now the newly minted HC of the Seahawks)...some claimed Michigan's D would take a step back and I pointed out that we hired a new guy (Minter) who came from the same staff we got Mac from...and then our D actually got better. So what did we do now? We hired their former boss, the (former Ravens and Giants DC) who created the system they ran and made him the highest paid assistant in all of CFB. He will have some different wrinkles but the returning players all ready know how to run it. Could end up being a case of the students becoming greater than the master but he was the teacher. This was the * above btw...
So those are the facts...I will add that this D certainly won't be as deep...some guys on the DL might be asked play to more than 30 snaps a game...but look at the core Michigan brings back and not what they lost...I'm personally way more worried about our O and if we have a QB