On Friday, goals from Carles Alena and Jose Arnaiz helped Lopez's side to a 2-1 win at the Miniestadi against the Gijon outfit.
Upon finding out that the first team coach was present, Lopez couldn't help but take a pop at Luis Enrique for failing to do that throughout his time in charge.
"I heard during the afternoon that (Ernesto) Valverde was coming to see us and I was very excited about that," he said.
"I'm very thankful that he did.
"It's the first time that the first team coach has done so in two-and-a-half years."