I'm sure he'll be convicted but I think it'll be dealt with in a fairly low-key manner or even, as I suggested on another thread, happen off-screen and just be referred to in passing. Reason being I don't think Clayton is really the "story" - yes, he has a link with Callum but it could frankly have been any random scally that killed Kylie. He was a means to an end, dramatically.
I expect the focus will now shift to how David rebuilds his and his family's life. It's not like Kylie's murder is a big "whodunnit", nor is Clayton some big iconic soap villain that we're all desperately waiting to have his comeuppance.