I’ve got to admit my heart sank a bit when I read the OP but he sounds very much like a Pochettino type signing (when he came from Espanol to Southampton). Not hugely experienced but has clearly made an impact in his first job which has made people sit up, take notice and think “we’ve got one here”.
As others have said, rather him than a Pulis/Lennon type appointment.
When people talk about “experience” it’s not just about the numbers, how many years you’ve put in, it’s more about proving you can do the job, make an impact and that you’re not on the way down after a successful career. From what you’ve said, it seems like if we didn’t grab this bloke now, he could be out of our reach in a couple of seasons, if he continues on his current trajectory.