Nate Johnson just hit the portal, he would be a senior. Decent size and seems to have good offensive and defensive numbers. I don't know if he's more of an on-ball or off-ball guard but they had a 5-11 guard who started every game this year that I'm guessing was the primary ballhandler. Not a great 3pt shooter (30%), although he shot 42% on 50 attempts as a freshman so I think it would improve.
Doesn't seem like a homerun for the last guard spot, but we could do worse and the options are dwindling.