Lopez spent a short spell with the R’s under Paulo Sousa earlier this year, making ten appearances and scoring one goal.
The Spaniard, who had the opportunity to extend his stay at Loftus Road, believes that he and Sousa made the right choice in coming to Swansea in the summer and is hoping to get one over on his former employers.
“I had this game marked on the calendar,” said Lopez with a wry smile. “I’m really looking forward to playing tomorrow.
“This is a special game for me because I played there last season.
“When you play against your old team you have an extra motivation and there is something special in your feelings.
“But it is about three points, and they are just as important as they were for the last game.
“It is very important to win this game as much as any other.
“I actually had the opportunity to stay there. There were talks about my contract but the agreement was broken.
“But that meant I could come to Swansea, which was a better opportunity in football and for myself personally.
“I worked with Paulo at QPR and it worked well. But when Paulo came here he spoke about the project he had in mind for Swansea and I liked it.
“Paulo is doing his job at Swansea now and that is what matters.
“When I look back at my time there, I think there were many positives. QPR gave me the chance to play English football and I am thankful to them for that.
“I had a good relationship with the players and supporters, but sometimes you finish your contract and you move to another team. That is what happened there — I don’t have anything to prove to them.
“I think Paulo did a good job at QPR and did many good things, but circumstances at a club like QPR make it difficult.
“He was doing his job and for some reason he finished, but it is not Paulo’s fault.
“As a footballer you need to avoid all kind of distractions and pressures. You just try to play your game and do your work as well as you can.
“You have to avoid outside distractions otherwise you take your focus off what you’re doing on the pitch.
“If I score I will be very happy and celebrate it with my team-mates and fans,” chuckled Lopez, who is yet to find the net for Swansea.
“I don’t like those kind of situations (performed by Adebayor and Tevez), so I will just be with my teammates if I score.”