Arsenal’s Lisbon entourage fails to overcome big obstacle as Gyokeres deal stallsArsenal’s bid for Viktor Gyökeres hits snag. Lisbon talks fail to bridge financial gap with Sporting. Gunners offered £56m plus add-ons, but Sporting demands £60.4m guaranteed. Gyökeres favors Arsenal, but the deal’s future uncertain. Clubs remain apart, but hope persists for a resolution.