The first paragraph at the link is different than what is posted here. The CBS elucidated that his worry was about the call becoming public.
Good catch!
they made a minor change to another paragraph and added a summation to the updated article:
original article published 1:21pm:
“ Morrison said the summary released by the White House of the call between Mr. Trump and Ukrainian President Volodymyr Zelensky accurately reflects his memory and understanding of the call, but said he had three concerns about a potential leak of the summary.”
updated published 2:32pm:
“Morrison said the summary released by the White House of the call between Mr. Trump and Ukrainian President Volodymyr Zelensky accurately reflects his memory and understanding of the call, but he said he had three concerns in the event the summary became public.”
A summation drawn from the wording of the Morrison statement has been added to make a longer article, starting with the Fiona Hill paragraph. But CBS was the first into print, so I guess they get a pass on a few minor edits?