The Champlin Park teammates both received offers from Illinois last July. John has specifically been a high priority, as the Illini look to bolster their frontcourt.
John averaged 13.9 points and 10.6 rebounds per game during his junior campaign. He took an official visit to Oklahoma earlier this month, and the Illini are still working to get him on campus.
Parham has visited him multiple times since the offer last summer, and they have built a good relationship.
"I really like talking to him," John told IlliniInquirer.com in October. "It seems like I'm highly valued by them. I would like to think that I'm one of their top prospects, but got to keep working to maintain that."
The Illini are also expected to check in on Cristo Rey Jesuit power forward Jericho Sims, who received an offer from Illinois on Monday. Wright and Sims are teammates on D1 Minnesota on the adidas circuit.
For more on Theo John, click HERE to read our Spring Scout breakdown.