He said: "When we are on opposite sides we have one-to-one situations where sometimes he comes out on top, other times I do.
"All I do is to try and play my own game and show my own qualities, but for sure, it's tough against Luis because he's a world-class striker.
"That helps us to improve and it always goes well when we're up against each other in training.
"It's true that it's always better to have him on your side than be up against him. I'm lucky enough to play with him, but the most important thing is that Luis gives everything for the team.
"He really makes himself available for the group just like all the players here and that's why Liverpool are continuing to make progress with every game."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball