If Illinois cannot add either Richmond or Lanier, the next highest rated guard/wing is probably 6'5" Wooga Poplar of Miami. He averaged 13.1/4.8/2.1 this past season, shooting 42.6/38.5/86.4. He played against good competition in the ACC, he's experienced, and he has solid numbers. Illinois could do a lot worse than getting a transfer in from Poplar.
Actually, 6'6' Minnesota guard Cam Christie is probably rated higher than Wooga Poplar. I think that Christie would actually blossom as a 2-guard for the Illini, greatly improving his ranking for the 2025 NBA Draft. Boswell as PG, the fast-paced Illinois offense, and body by Fletch would seem perfect for Cam Christie. But it seems like Christie and family are not fans of Illinois men's basketball? Maybe that can change....