Solis should be pitching in Hagerstown/Potomac. He's more polished than pitching against 18 year olds in Short-season ball.
I would hope we would see Brandon King in Auburn's rotation. He only pitched 11.1 IP last year for the GCL Nats and only 30.1 IP the year before for the GCL. Still really young though (20) and has a good arm.
It would also be nice if Nate Karns who also has a big arm would make a debut in Auburn after not pitching last year after getting drafted. I have heard nothing on him.
Tyler Hanks is also someone I would keep my eye on. Played with Harper in college.