Making Cuts

Its time to make cuts for my high school soccer team and I'm having a tough time with the decision. I have several players who have been with the program for a while but they just haven't figured it out.  They were told about the things that we had issues with and needed to improve on but they haven't really done anything to make themselves or the situation better. There's been no sense of urgency to improve or change, they're too self centered, over committed with other things, and I think they think its expected that I will keep them around.  My question is - Do I keep them around or do I cut ties?