Yes, he started everything in terms of European success against Sampdoria, but it seems to me Robert is going the safe route by appointing either Unzue or Valverde.
Robert has been giving contradictory hints tbh, He stated barca DNA is important then backed down and then later hinted at it again,probably after Sampaoli giving them more reasons to remove him from their list (losing to Atletico which make them closer to losing 3rd place just after losing in CL)
I would take his words with grain of salts,the media linked us with ton of different players last season and we found ourselves with different players in summer.
[MENTION=2]Bojan[/MENTION] is making a good case tbh,Koeman seems legit option with Valverde & Unzue. There is no safe option between the 3 candidates. Unzue has no real coaching experience,Valverde and Koeman both failed at biggest club they coached (Valencia) and both have done well in the rest of their coaching careers. The only safe thing with Unzue & Valverde over Koeman is that they are Spanish just as 3 of our last 4 coaches.
Not that I favor him tbh, I don't like Koeman coaching at all. I have my doubts over his man managing an "All Star" locker room and don't like his style.
And I still don't forget him turning us down in 2003 when he thought that we are just a mess and favored staying in Ajax,he missed has chances back then (luckily for us) and I think we should look somewhere else