The two clubs are locked in transfer talks over a deal for the Bosnian.
"I always say that I like all great players," he told beIN Sports.
“Pjanic's a great player, although there are also great players that we see in the newspapers every day."
On the prospect of Arturo Vidal moving in the opposite direction, Setien was coy.
“He's a player who certainly has positive qualities and brings positive energy.
“He's a great player in terms of performance and behaviour and we're happy to have him with us."