The Argentine is excited about the talent now at manager Mark Hughes' disposal.
"Of course we have a lot more quality than we have this time last year," he said.
"We've improved a lot. You look around the dressing room and you see [Ji-Sung] Park and Fabio [Da Silva] from Man United, [Esteban] Granero from Real Madrid, Greeny [Rob Green] from the national side.
"Now we have to make sure we work well together and start to make a good side. We clearly have good potential and we are all very excited about the possibilities.
"When you have a lot of quality players it makes it easier to make things work. So hopefully during this break we can train hard and start to gel."