Conversation so far:
What happened in 1983?
After receiving offers from A.S.
Roma and A.C.
Milan, moving to Italy seemed right and a four-million dollar proposal from Udinese was on the table.
What did he perform at Udinese?
bigger clubs pressure the FIGC (Italian Football Federation) that blocked the transfer expecting financial guarantees.
Did the transfer ever go through?
At the end of the controversy, the deal went through and though leaving Flamengo fans in sadness, Zico made the Friulians fans finally dream of better days.
Did he win on his new team?
only gathered 32 points and was ninth in the final standing, losing three places in comparison to 1982-83.
What else happened in this time?
His personal top scoring dispute against Juventus's Michel Platini was exciting - Zico scored 19 goals.

Question: Why was this disputed?
Self-contained rewrite: Why was the scoring  against Juventus's Michel Platini disputed?