Yes, he is very smart, intelligent, a great business man, but he is a great seller before to be a great buyer.
He bought N'Zonzi because sold Krycho, bought Nasri because lost Banega as free agent etc..
Especially this season, I didn't understood his transfer policy. Looks like an overdose of ego to show what important he was for Sevilla. Many players bought this summer haven't satisfied Sampaoli and the team looks not better than the last year.
15 players signed and only five of them (Mercado, Franco Vazquez, Sarabia, Nasri, Jovetic) are good enough for the first team, with many new players relegated on the bench or out of squad.