MB4. Los Angeles Times Archives, "NEWSWIRE", published December 15, 2001. Original https://www.latimes.com/archives/la-xpm-2001-dec-15-sp-15076-story.html . Minimum faithful excerpt, Sports/New York Mets paragraph:
"Justice was dealt to the Oakland Athletics on Friday for reliever Mark Guthrie and minor league pitcher Tyler Yates"
"The Mets, who acquired Justice from the New York Yankees on Dec. 7 for third baseman Robin Ventura, will pay $1.2 million of Justice’s $7-million salary next season."

The first excerpt concerns December 14, 2001, before the December 31 cutoff. This is a contemporaneous report, not a 2002 reveal. It documents a known acquisition and salary contribution; it does not document how to value the two traded pitchers or future playing time. Copyright Los Angeles Times: minimal excerpts here for source criticism; follow the original link for full article.
