I think what people forget about Kelleher is that his first couple of cup games he looked absolutely crap.
He had a manager that realised he had potential and stuck with him as 3rd choice, then Ali's back up - giving him as much game time as possible in the cups. When we needed him in the League over the last 3-4 years he rarely let us down
You'd think a similar approach with a young-ish new to the league keeper would have been sensible. Especially with Ali's injury record and contract status.