Robertson was asked if a deal to take him to Atletico could have happened in the summer, ahead of the Reds' clash with the Spanish side in the Champions League.
He said: “Maybe at one point.
“I do want to play games and be the starting left-back and I have got to keep pushing to try to produce the levels I know I can do.
“The international break was good for me as I was able to get two 90 minutes, get that match fitness and two really good results for Scotland and I took a lot of confidence from that.
“He (Kerkez) is only young and I think we forget that. You try to help them as much as you can but you want to put pressure on them and you want to play games.
“He will be the starting left-back for Liverpool in the future and it’s up to me to push him this season and help him improve."