El Mundo Deportivo says Hughes was in Pamplona to see Toure in action against Osasuna on Saturday. However, the Ivorian's place was taken by Seydou Keita.
Despite Toure signing a new deal to 2012, Hughes is convinced they have the spending power to land the midfielder. The prospect of playing with older brother Kolo at Eastlands remains a big pull for Yaya.
Both Hughes and Barca sports director Txiki Begiristain confirmed they spoke on Saturday, but denied claims they discussed any players.