No thanks, that would be a crap appointment!
Why?
I know very little about him but wondering why he would be such a disaster.
From what I remember:
Ajax: didn't do to well. Sacked or quit (can't remember)
Benfica: did alright in CL, didn't win league. Left for PSV before sacked
PSV: Won Erdivisie. Left for Valencia.
Valencia: quit with them doing badly (bottom half even maybe)
AZ: Shit, sacked
Not a brilliant record other than winning Dutch league with PSV- akin to winning SPL with Old Firm tbh.