"We've got a list of targets that we are working very hard on," Ramos said.
"Negotiations are tough and sometimes they are even tougher than usual. We know what we are working towards and we know what our objectives are.
"The process of signing players sometimes takes time, but fans should be aware we are trying to strengthen up front and sign a new forward. Quite often, these things take time.
"It's true to say we have one or two areas that we need to look at defensively and maybe solve a few problems at the back."