The former four-star linebacker is leaving Penn State after two years with the program.
Penn State is still "monitoring" developments surrounding names, likenesses, and images.
Two of the best receivers in Penn State history both received franchise tags by their NFL teams on Tuesday before the 4 p.m deadline.
Despite sounding optimistic about the fall, Barbour didn't comment on Penn State potentially hosting its annual Blue-White Game this spring.
Poindexter brings 23 years of college football experience to Happy Valley.
"Growing up in Ohio, it has always been a dream of mine to have the opportunity to compete in the [Big Ten]."