In theory, for what benefits RU, this is a good thing.
A) You'd always want to have a game with an opponent having a full roster. This way, the results are accounted for without any doubts or question marks.
B) Playing at Illinois in this scenario, reduces any expectations on RU. If the game was at RU and Illinois had to travel here with Shannon, it would be the Illinois vs the world mindset.....any little thing Shannon did well during the game, would be considered an energy boost to a team in the road.......with the game at Illinois, it places all of the focus on what Illinois does or doesn't do.....how many minutes does he play in the 1st half or 2nd half?? Underwood has to answer 99 questions now about a player who hasn't played in a couple of weeks, instead of doing or talking about other things with his roster.
C) if Purdue arrives in a week and somehow Zach Edey didn't play, I would be disappointed....no one wants to defeat a ranked team, with an asterisk attached to it, even a Top 5 or potentially #1 Purdue. Same concept applies here, Shannon is clearly a B1G player of the Year candidate in any other season that doesn't have this version if Zach Edey in the conference......if I am RU, I want a 2nd shot at Illinois, with a full roster.
In terms of matching up, RU just has to play and defend the Illinois offense and do all of the same things they've been improving upon. You can't expect to get breaks to fluff up the resume or season results, you play through them, good or bad. There's enough excuse making or phantom reasons why something did or didn't happen and it's not a RU Screw thing.
This is an Illinois problem anyway and RU gets to benefit from it. Any results surrounding the Illinois program has a cloud of uncertainty hanging over it. Will it eventually become a big enough distraction later in the season?? Illinois apparently knew about this since the incident involving Shannon way back in September. Let them deal with it and let's play Illinois at full strength, Michigan with Dug McDaniel on the court etc.....
RU fans have to stop looking for the easy path or way around things.....it's better off for RU to face everyone at full-speed.