I don't think we can really get rid of too many without getting more in to replace them - we've seen this year that if we get a few injuries we're really stripped down to the bare bones.
We could do with letting go of O'Donovan if we can. And although i think he's done a job for us this year, if we bring in a manager with a different approach next year, then i imagine Platt will be surplus to requirements too. Aside from that, i don't think we can really afford to get rid of anyone without bringing in any new faces. To be honest, we might not even be able to let both the aforementioned go, especially if Marlon doesn't stay and if we don't snap up a new striker.